Guys who have (one-sided) Open LTR's: why?

I understand TRPs opposition to prostitutes in the context of being a man with shitty game/frame/looks etc. That's equivalent to accepting defeat; fine.

But if you already have those skills and an attractive partner but just in need of a little sexual variety on the side, why can't you satisfy that need through seeing the occasional prostitute? Do you need the psychological validation of plates to feel good about yourself and maintain abundance mentality?

When I was actively plating, I got off on being as opaque as possible in regard to commitment towards girls because I loved how much investment that would reap me and found it very validating. Ofc, TRP would criticize this not only because it's a shitty thing to do and that this validation seeking behavior is weak, but especially because those shortcuts would eventually end in shitstorms of catastrophical propotions long-term and I had to find that out the hard way multiple times.

OTOH, being upfront about casual intentions never made much sense to me either, as them also sleeping with other guys and putting in the same minimal effort as myself would make it feel almost as transactional as going to a prostitute. Plating that way, at least to me, and especially if you already have a main girl, only makes sense if you have a very organical pipeline to replace churn and rather limited amounts of $.