I tell you this: it can be good, if among other things the escort is good at her job, or not. Also it is usefull if you have that need to have sex and to achieve some goals (sexual fantasies) but, after some time, the sex with escorts may not satisfy.
Let me explain it simple and plain: sometimes I leave the brothel with two types of emptiness, I never had free sex in my life as some of you already know and when I remind it somehow after I had sex with the escort, I feel the emptiness, and I am not talking about the natural emptiness after cumming, I am talking about the other type of emptiness.
I am not able to compare sex with an escort with sex with a girl that is interested in me since girls are never interested in me and, if someday a woman gets interested in me for something else than the friendzone (by the way I do not have female friends) I would think: WTF, is this a scam, is she looking for an idiot to bank her? I am quite sure I am utterly not her first choice, why I had to wait sooooooo many years for this, dammit, etc, etc...
I should save money in order to pay for my first ménage a trois but, if I try to have sex with any girl that is not an escort, it will be a lose-lose thing for me.
Anyway, I believe the best answer for such question is: have sex with an escort and draw your own conclusions.