SP Luver,
I wasn't really implying that erectile "malfunction" is the problem, although I can see how you took it that way and I have experienced that problem on occasion throughout my life for whatever variables.
My problem is partly the lack of sensitivity a condom causes ( it doesn't matter how thin ) On occasion I've found a girl who's compatible ( tight enough and can control her muscles - no, I'm not saying I have a little dick, but that's none of your business .. he he ) Generally though, I can last a long time with a condom, which is the problem. After an hour the thrill has completely gone for me.
On the mental side a condom is like a barrier to me. It's been that way since as long as I can remember and I can't seem to shake it. Much like the one time I tried saran wrap DATY, it just kills that mentally perceived physical contact. The same applies to CBJ. Performed on me that is although it would apply the other way round as well.
For a second there I was wondering where you could get a session for $60, but I'm guessing we seek different experiences. Money is not a factor ( even though my VISA proclaims otherwise ) in my preference for MPA's, because with my favourite MPA's I tend to spend more than an hour with an SP would cost. I get more time, but all the necessary GFE factors and subtleties, as I perceive them, are present. That's not to say my idea of a PSE can't be achieved with an MPA, but she's retired.
One last thing; it's also easier to select an MPA based on physical preference and for me at least, I've become aware of more that intrigue me. I think there's more variety and it's easier to "sample" for lack of a better term, as well as investigate this aspect in advance and/or prior to the session. I can be very shallow in regard to looks, even though personality and mannerism can enhance of detract from physical appearance to a large extent.
OK, that wasn't the last thing. It's my perception, there's also more of a YMMV factor and possibility of the unexpected or unknown territories with MPA's depending on where and who you explore with. With SP's you pretty much know what their service will entail, within reason.