[Anakattawl]

D. Some snakes just don´t accept dead prey, and fiddling around in their Terrarium isn´t all that great.

I suppose if they just won't accept dead prey, then that's fair enough. And it's a fair point if you keep an eye on what's going on to ensure there is no harm to the snake. Though if the snake does feed fine on dead prey, I can't see why that's a bad thing.

A. Price, dead/frozen the food is always a bit more expensive (depending on the animal from a few cents up to a few €´s)
B. The nutritious value is higher (some vitamins are destroyed when frozen)

Ok, but you can work around both of those, it's not a deal breaker to feeding dead bait.

C. Natural Predatory instincts are preserved

You could say that because it's not a wild animal anymore, there shouldn't be much need to artificially try to preserve it's natural predatory instincts, just as long as it didn't affect it's quality of life. My terrier would love to kill next doors cat, but I don't condone it, and he's perfectly happy on butchers chops and dog biscuits...