To be honest, me personally, I would never get an animal where I needed to feed it live prey, because I just don't wanna see it. I have no problem with it, in principle, really, except the fact that it's not really fair on the prey. In the wild it's whoever has the most skill/cunning/agility, that wins the 'race', but if a mouse is put in a cage, then that's it's chances gone.
My uncle has always owned snakes- hog-nosed snakes, corn-snakes, boa constrictors, and one that I can't remember the name of but it was quite big and was incredibly fast and colourful- and he always fed frozen mice/rats/rabbits etc.
A lot of reptiles require movement to see their food- many frogs do-, and will often only attack a prey at the right temperature, and I think it is nice to feed them in their natural way.
I'm in two minds about it totally lol.