For me it is because I am not able to set my availabilty up more than a day or so in advance. If it is an evening appointment, then I have to know that my GF isn't going to be coming over, or that she hasn't made plans for us that evening. If it is a daytime / afternoon appointment, then I have to make sure I am not going to run into a conflict with one of MY clients...I have to atend to *MY* business so that I can support financing yours...  

From a hobbyist point of view (speaking just for myself), I have found that when I *DO* set up something with a far amount of advance notice, the provider cancels more often than not. Not *ALL* the time, but more often than not. They simply assume that one or two hours, or the day before or the day after, means nothing to my schedule. I have noted here before that my sucess rate with independents only runs at about 50%....almost invaribly I get that call or email asking "can we change or date to________?"

I realize that I might be a tad bit unusual in regards to hobbyist in that I have both a steady GF and I don't have a 9 to 5 punch the clock type of job, but I am sure there are plenty more like me. Besides...it shouldn't matter...an appointment is an appointment. BOTH parties should work to keep their respective commitments. And when I am cancelled for reason like "I wanted to go shopping" (noted in a post below), it errodes my confidence in ASPs.....

My schedule is difficult to set up in  advance. By 9:00 AM the day has usually been rescheduled. Serving many "bosses" I have to be able to react to last minute demands. Also the nature of my business requires triage and fairly often something blows up and requires immediate attention.

I had to flake on a date set a week in advance because of an unscheduled meeting was sprung on me the day before. That sucked.

Also:
The little head dictates and prioritizes my schedule.  Guys get horny on a whim and all of a sudden that $$$ or $$$$ doesn't seem like such a sacrifice!  I am still wanting to see you HB!  You are a fox!

I had an agenda for the last two days.  Sunday- Museum of tolerance in the Am and dancing in the pm.  Monday was wide open and I was hoping to fill it.
This is what really happened the last two days:
1.  The guy who was going to go dancing with me had not confirmed and a client wanted Sunday night.  I gave the evening to the client and warned him that I will cancel if my buddy calls because I like to keep previous commitments.
2.  Dancing guy calls and confirms,  I cancel the client and move him to Monday night.
3.  Dancing guy calls and cancels.  Instead I spend all day at the museum.
4.  On the way home from the museum, Monday night's client cancels.  Friday's guy calls and says he is town tomorrow (Moday) and not Friday and he wants to see me.  I call back immediately and tell him my Monday night canceled and I want to see him.
5.  When I get home, my old monday night guy calls and tells me he can make it.  This happens before the old Friday day guy calls to reschedule, so I put down the monday night guy again for Monday night.
6.  This morning I get home from the gym and the Friday day guy is tyring to see me today.  I can't see him. I need to run around, get money orders and pay my taxes. Plus I am embarrassed because I filled his spot with a regular who I prefer to see.
Now I have to stop typing and call the Friday day guy and tell him I am not available, but Friday is still open.

And you thought you had schedule problems!

I think that part of it is rapidly changing schedules not allowing someone to plan in advance.  Also speaking for myself when I call to book an appointment I'm often ready to meet then.  If the appointment is a week later, I may not be in the mood.  The short version is sometimes I'm more horny than at other times.  

-- Modified on 4/15/2002 2:47:19 PM

Personally, I would love to make the switch to incall GFE providers, but given my busy schedule AND the West L.A. or SFValley location of most incalls, I am not allowed the opportunity.  Really, if I have to drive to Sherman Oaks or West L.A., I may as well drive all the way to Tijuana.
I just cannot understand why there are so few girls in the Pasadena area (that are NOT of Asian descent)(I love Asian women, too, but that is all I get at MP's).  Yes, I know you are closeby, but you are into older guys and I am into younger women, so that's that.
The last thing I will do in this game is knowingly put my relationship at stake so that I can see an incall GFE.  MP's, HC's and girls that can schedule on a moments notice therefore take precedence in my hobbying activities.  I would gladly trade two MP experiences for a single incall GFE, but the schedule just will not allow it.

I have a busy schedule, never know when I will have free time. If I am really tired, I want to go to bed...not "go to bed".

Also, under most pricing structures, there is little incentive to  have a regularly scheduled gig. If I paid by the month at a percentage discount based on a visit a week, that might make a difference. But personally, I would rather buy a la carte, and pay as I go.

You feel an itch...you scratch it.  (After looking in your wallet, of course)

I'm just not where I want to see someone on that regular of a basis to have regularly scheduled appts. Of the 4-5 that I have a preference for, I'll often schedule a week or so in advance so that I can have my schedule clear at that time. It also depends upon the provider. If she only sees 1 or 2 a day, or is a part time provider, then it often means scheduling ahead of time to ensure that she can see me when I can see her. Sometimes though, it's a spur of the moment decision to see someone, but not just anyone (and then you can pay the price of not planning ahead).