I'd say it's a combination of privacy and the security of knowing that the chick won't turn up pregnant.
You guys are in here arguing over this but in reality BOTH sides are right
@Ronnie Lott is correct in the fact that these celebrities CAN smash dimes off GP. Here in ATL you see it ALL the time. These Thots running around after ball players and rappers, if you have ANY type of fame or status you can find you a dime that would pretty much let you do whatever the hell you want.
Some other posters are right as well however, the Celebs who pay are more than likely paying for Privacy and the peace of mind that the escorts won't turn up pregnant. The downside to simply smashing every Thot and middling Instagram model who opens her legs is turning out like Dwight Howard, who in turn is nothing more than Shawn Kemp 2.0. Multiple baby mommas and the headache/criticism it comes with. Dwight had to go through hell to keep one of his baby mommas from going some reality show with his kid. Iguadola is getting sued by his baby moms because she claims she needs MORE money because his daughter is too smart. Didn't one of them white bytches Harden was fukking take pictures while he was sleep? Some Ho Melo smashed had emails she was leaking of him promising her presents and shyt. Who wants to deal with all of that drama when you can pay an escort a couple thousand, bust your nut, and keep it moving?