What's the purpose of a sex tape?

[RayPowers]

With all the sex tape talk going around about various celebrities, I have to kind of sit back and question.... Why does someone make a sex tape? What actually is the purpose of having one? I understand the fun of filming one, and the kind of play acting you can do and have fun with when you're being filmed, but once you're done... why keep it? Why not just erase it?

Do you bring it out at family get togethers for everyone to watch? Do you use it later to masturbate to, when you could, you know, just be [censored] the girl again instead? Do you ever go "Hey honey! Let's order in some thai food and watch that movie we made of me [censored] you doggy style over the couch while you sucked on that dildo!"

Clue me in OOT. Why do you ever KEEP a sex tape? More specifically, why in the world would a celebrity make and keep a sex tape with the possibility of it being released? I could see some exhibitionists making it for some kind of amateur distribution channels, but that's something else entirely....

Ray