Many checklists can be ticked quite rapidly. You could spend months trying to persuade a civvie to take it up the arse and she might still say no. With prossies, you just find one that does.
Variety lets you be more objective, enjoy different states of mind, adjust.
Several different women in one day can give a more impartial perspective of one's own sexuality than just seeing oneself as part of a couple.
We can all learn, all the time. This week, stumped for a non-EE, I booked a Romanian, but close enough to a brothel in case a plan B was required. In order to enjoy the punt with the Romanian, I deliberately lowered my expectations. Adopted a calm and reassuring attitude to deal with her probable paranoia and no-no's list, decided I didn't care if there was no meaningful interaction, no OWO, no fingering, no DFK, no warmth, I'd just stick my cock in and fuck her. It turned out well, within those expectations. She even started pulling me in to kiss near the end of the shag. I found her new no-no's amusing, ones I'd not come across before. It wasn't a positive punt but if I was stuck again I'd put my cock in her again, so what could I say?
Later, I decided why skip the plan b? I'd avoided it as a plan a as I felt i was getting lazy. Went there anyway and had i think the best shag this year (so far).
Probably not completely on topic but thought I'd share.