Ok now, let's just be honest!
How many of you jerk-off before your session, to last longer?

The last thing I need is to "last longer" I usually use up almost an entire hour finishing the first time. The last thing I need to is to rub one out before having "real" sex.

Now if you had asked me this same question thirty years ago, you might have gotten a different answer, but today "staying power" is the least of my worries.

That all depends...why are you asking?  Lol. Just kidding!  Seriously though, if I am spending time with a provider that I know like to SEE me cum or if I'm with a regular provider who might have a special request for me I will jerk off to the brink if blowing my load Before I leave to drive to her.  I was years ago that by doing that you get more copious amounts of cum.

I abstain for at least three days before with a week being my normal intention. As said by GaG, thirty years ago it would have been different.

In my forties I did neither and now I do the latter.  

One of my pieces of advice to him was to jackoff to last longer.

I have a few guys that I'm going to suggest this to.

At a younger age, sure, I would probably need to rub one out before a date or ensure the provider is fine with MSOG. No worries there now!

I think I'd cancel the session if I rubbed one out. I wish I could "rub one out" as good as the head I've gotten from some providers ... obviously, I can't suck it myself.

Unless it's a spur off the moment type situation, unless this John has already cum that day. However I won't purposely masturbate before a session, I'd probably cancel if I did that.

Mainly because I want to try for MSOG with the provider. If I unload the chamber then usually I don't have more than one more in the magazine in a 1 hour setting. Now for a multi-hour setting where we are going for 2 or more SOG, then perhaps yes to prolong each go around.

This applies to me as well, although I never saw providers in my 20s and 30s.  

Guys have told me that if you don't ejaculate on a regular bases that blood can build up and come out mixed in with the ejaculate.

I have seen it done before.

If anything, I save up by abstaining for 48 hours.

There is little hope of having a successful session. Just saying...

Regardless of age, better to refrain at least for 48 hrs.  72 even better.  The intensity of sensation will increase greatly...

Round one is usually what I would think is pretty average, but round 2?
It's a good thing I'm in in really good shape these days, because it can go on a looong time (and often it's just not meant to be).

I don't jerk off before because: a) all the tension built up is gone and then I don't crave or desire sex as much and b) I'm only good maybe once a day for getting it up enough for intercourse.  

as sometimes I have difficulty finishing when I do that the day before.  That fact, combined with my age and decreased physical stamina (breathing LOL...not maintaining an erection).  My last appt, I withdrew, rolled over, breathing heavy.  She made note that I had not cum and said you're still hard (no, no drugs-yet) clearly wanting more.  I was really really embarrassed.  I guess I should subscribe to daily burn and work on this.

and I am OLD. lol

By 72 hours of no sex, I can start feeling myself getting grumpy.

If you want to wait three fucking days between getting laid, fine. I am quite happy getting laid everyday.

That is unless you went at it for an hour without cumming. I have been known to do that myself, and I am in pretty decent shape for an old man. I can still do a Ten K and go get laid an hour or two later. Now I won't say how fast I can run six miles at my "advanced age" but my knees give me a lot more problems than my wind.

I don't really like the gym, but I hate being an out of shape fat ass more than I hate working out.

So, hell no. First round is usually BBBJCIM and I last all of about 2 or 3 minutes but can offer a full deposit. Round 2 is where I hit my stride and get my moneys worth. Paying a hooker for sex but jerking off first....isn't that an oxymoron....

I try to get laid at least "almost everyday" and most of my sex is P4P

I am in a similar place to you, but budgetary restrictions limit me to once a week usually.  Except when I decide to go all out...then, all bets are off, except those that pay off... lol...