and yes, I'd say the majority of gals have age restrictions for no one under 30, and often 35 - even 40!

The common reason cited is that young guys are a problem for a number of reasons:  They get all puppy-eyed and fall in love with the provider, they tend to be aggressive and lack manners, and also tend to bargain more on account of the fact that they don't earn as much as older gents and therefore need to save money at the gal's expense.

There are other reasons also that generally fall under the category of lacking life experience.  

Not all gals feel this way, and manage to deal with younger guys well enough.  Sometimes they screen them by talking with them over the phone and weeding out the ones they think could be trouble.  Some gals are very skilled like that.  I always enjoy those gals.

Then there are gals that have the hots for young guys.

I often tell young guys who PM with this issue to try their hand at writing a concise and respectful email that will demonstrate their level of maturity, and to see if that will help their cause.  Some have told me that it worked.

Hey everyone,

I'm 24 and the last provider I saw seemed to be throw off when I met her for our appointment. I'm just curious, does seeing someone as young as I am make providers uncomfortable? I assume it might be at least surprising to some.

Every girl will be different.  I've heard stories of girls in their 20's not wanting to see men in their 50' because they remind them too much of their father.  Go figure!?!

Thanks for clearing this up. My age actually hasn't been a huge issue. I think that it just effected the vibe of the whole appointment.

I think it would be productive for you if you disclose your age in advance, over the phone by saying something like: "I'm 24, would that be a problem for you?"  

Even if she generally prefers not to see men under 30 (or at times even 40), such a question is bound to put her more at ease about you being that age, and also get her accustomed to the idea so not to act surprised when she actually sees you. If that ends up being a deal breaker for her (unlikely but not impossible), trust me, you wouldn't have wanted to see her anyway no matter how great her reviews are or how hot she looks.