two words...

FOOD CHAIN!!

plus, there is nothing wrong with thinking it is "cool" to watch a snake eat. I find it facinating how the snake constricts its food. PLUS... in all reality, your snake food is a RODENT. I bet if that rat was chewing thru the guys drywall or attic he wouldn't care what the snake did to it...
Also, is it better for these RODENTS to be killed by traps or poison and then thrown out... or being put to good use to feed a cool looking snake?

Just saying...