Hm.. well when I was younger I would always keep frogs, toads, maybe a lizard or two and turtles. Well, I like all of those animals, but nothing compares to snakes for me. I have no desire to have any lizards except a black throat monitor (though I'd like to be able to run a zoo someday, and that would have lots of lizards lol) I don't want any more frogs (I have one white's tree frog) and well.. nothing else except snakes really as far as herps go.
I used to think I'd have nothing over 6' long.. but after being up close and handling 8-10' burms I really gained confidence and decided to try something bigger - I got my first boa constrictor.. well that was cool, I want something bigger! Now with the burm and the anacondas, I'm gaining experience for someday when I hope to have a retic or two and a male green anaconda.
I love a variety of snakes though, not just the big ones. Everything from kenyan sand boas, garter snakes, kings, milks, corns.. almost everything. Only snakes I don't want in my personal collection are hots.