I had a good nosey on that forum.
What struck me most is whilst they were generally saying that their wives/partners are 'boring' in bed and day to day life and don't do the filth that floats their boat, yawn blah blah...
It's bullshit.
They often don't ask or discuss the sex stuff, they expect their partner to guess...
Many of them are NOT getting particularly outrageous filth from SW either, in fact the only thing that is outrageous filth is that it is a SW and it is not their partner.
They're also not getting anyone significantly better looking than their partner in most cases!
Many of them seem to be getting a pretty minimal experience, far less than they'd get from a partner (assuming you know, that they were nice to their partner, talked to them, listened to them, etc etc) and the really kinky stuff (threesomes for example) are not what they're cracked up to be, or anything beyond basic PIV is an extra they're not going to pay for anyway...
How interesting can a person be when you are simply paying them for an hour or two of their time, a shag and inane chat about likely, made up bullshit (on the SW part anyway). If any of it is exciting, it is again because its fantasy, not real.
So this idea that its alllllllll because their partner is boring and not adventurous in bed is a huge pile of wank!
The more time and money they invest into their 'hobby' of using SW's, the less they invest into real life, real relationships, the more boring those become, the more annoying they are as they take time from the hobby... and so on.
You can't compete with his addiction and this hobby, nor should you try because the fault does not lie with you, even if you were the most boooooooorrrrring person on earth!
I'd tell him to fuck off, if he wants a fantasy life with no boring bits and only paid for sex, he's welcome... but the divorce is gonna cost him!