Well, we'll have to agree to differ on the main point, but to some extent it's two sides of the same coin. An hour with a prostitue including, if you're a get-straight-in-there-and-shag-it merchant, say £120. Picking up an unknown girl in a bar, maybe three vodka-tonics (each), entry to a club and a few more drinks, a taxi back to her place, possibly a takeaway kebab on the way, okay, a couple of hours action between her snoring drunkenly beside you, then getting back home or to work or whatever in the morning, not to mention having to so all that boring social interaction thing - £???
Sorry, I don't see that it's two sides of the same coin at all. One of the girls is a prostitute. Yes, that's right. A prostitute. She's taking her knickers down because you've paid her to. That's it. No other reason. And two hours later, she might do the same thing with some other guy who's also paid her to.
The other is someone who's taking you home because she likes you enough to want to do it for free. The fact that you spent money on vodka and taxis has no relevance at all.
Guys who mix the two up and think it's all basically the same thing, because the net financial outlay may be the same and because they ended up getting their dick wet anyway, are living under a very severe delusion.
And the 'boring social interaction thing'.... if you're a functioning adult who has adult (i.e real) relationships with other people (like your mates, your wife, your family, your co-workers and so on) the 'social interaction' bit is the bit you'd mostly enjoy. Wouldn't you?
Then again, if you sit at a computer all day long and make 'friends' that way, I suppose real life could quickly end up looking like hard work.