No doubt for some it's an ego trip, albeit based on a delusion.
I suppose all punts are ego trips to some extent...by paying £££ you can direct the attention of girls onto yourself that you couldn't on your own merit.
Maybe the guys who think they've paid, so their pleasure is all, are on an even bigger trip that cash is king and I can buy what I want when I want with it without regard for who is supplying the pleasure.
Maybe those acknowledge the humanity of a prossie and sometimes look for mutual pleasure are on less of a power trip....just saying!
I agree there is some delusion about every girl cumming every time with one lick of her pussy.
As to being squeamish about licking pussy, I need to know it's clean before I go there, preferably the first of the day. But surely the same argument goes for kissing...whose mouth or cock has just been there? Likely her hands also have touched many cocks before yours today. Punting really isn't for the squeamish!