Rumplestiltskin

I am very confused over what exactly Rumplestiltskin was trying to accomplish by demanding that straw-spinning girl's first-born child. Was he interested in using the child to labor in some medieval chamberpot factory? Was he an incredibly lonely short-person, too lost in his own self-loathing to search for a woman who would grant him the child he truly wanted to love? Or was he just an idiot, not realising the incredible annoyance that is parenting?

I mean, come on. He'd have to pay for everything for that kid forever. (I, myself, will soon be leeching off of my family again.) And for what? So that he could live vicariously through the child? I would think that a magical elf with the power to turn straw into gold would have the means to live as he pleased.

What's that Rumpy, you wanna play on my soccer team? Well, I don't know, you kinda suck, but...what's that? You're offering me a huge pile of gold? Welcome to the team! We're going to Boston Market after the game!

My best guess is that Rumplestiltskin was a cannibal. He didn't want to have his own kid because he was afraid he would be too emotionally attached to truly enjoy the meal. So he had to conjure up a plot to get someone else's baby.

What worries me the most, though, is the following: What plot did Rumplestiltskin conjure up to acquire the salt that we all know is necessary to cook proper baby-loaf?