Defintely not. I have always had a preference for older (and generally wiser). If I open my door and see you standing there, I certainly won't be disappointed.

One way to deal with this issue is to tell the provider prior to the session - whether on the phone or, preferabley, email - about your age and appearance (skip the widowed part) - so that you give them the opportunity to take a pass.  Obviously, there's nothing they can do once they're face-to-face except grin and bare it (pun intended).  Seriously, many of the providers are similar to Sin in that they look at the inner John and appreciate  older gentlemen as they are gentler and more considerate sexually than younger guys as a general rule.  But I agree with you. Why risk feeling like a cradle-robbing perv when you're spending $$ to feel good.

and will not see young guys like me (early 20's)

When I ask them why, it's because young guys are aggressive and/or can't afford it.  

Older guys tend to lay there and let her do her thing and often have deep pockets.

And older providers might have kids my age and that can be awkward.  Try seeing a provider that "prefers mature gentleman" or just see a mature provider.  IMHO, mature ladies tend to have better attitudes and are doing it because they love it and really understand how to please and be pleased.

pumps to book you for future sessions. Age does not matter when you can produce and make a lady wonder where you have been all her life.