Because you need a soul for that.
Because he needed one.
Depressing. What's life like without alchohol? Depressing. I need friends.
The Nun has hope in her soul and the lady taking a bath has soap in her hole.
One has hope in her soul and the other has soap in her hole
He whipped out his wand and yelled, "***Shtupify***!".
One had a horcrux, the other had a whorecrush..