Reasons to go to professional sex workers instead of getting it "for free" from a civilian:

1. they may be willing do things you can't expect a random stranger/hookup/officemate to be willing to try

2. they won't expect a relationship to develop and won't threaten to out you for leaving them.

3. they know what they're doing and make the crime worth the danger. going to a pro sex worker is like going to a pro masseuse, pro personal trainer, pro physician- they are paid to do it because they are trained, skilled and experienced.

4. their job is illegal, they have no more interest in getting this made public than you do

5. you pick the time, date, place, activities and conditions. they don't like it, you find another one. easy as pie and no hurt feelings.

6. you're less likely to have a pissed off husband or boyfriend come after you for "getting with their woman"

7. they're likely more physically attractive than the women spitzer might meet in his office or could reasonably be expected to chat with in public without arousing suspicion. odds are much better she is shaven to his tastes and will arrive wearing seductive lingerie. you can't normally expect that of partners.

8. the power element- money brings influence and self-gratification, buying sex is an act of exerting that power.

need more reasons?