I've managed to only have one snake, my normal male cornsnake "Slinky" for seven years, but that's because my mom wouldn't let me get any more snakes. She used to be afraid of them. I tried getting into other species of animals- lizards, birds (not that I don't love my sweet african grey parrot Suit), hedgehogs, but what I really wanted was more snakes. She realized that and I quickly went from one to 10.