Well worry not, you Never have to feed your dragon a mouse at all *unless of course you choose to*
Alot of people are the same way you are about this topic, its hard to have respect for all living things, but treat something alive like its food (dont worry I getcha) :wink:
But the problem with mice/pinkies is they are super fattening, like feeding your BD Mcdonalds supersized valuemeal everytime you give him a mouse/pinkie.
Impaction isnt really a concern with mice unless of course you give him one to big for him/her to eat.
I feed my BD a "frozen pinkie mouse" bought from petco for like $2 usually like once every TWO weeks just to give him some variety/treat. (THIS is my choice, not required)
***************So moral of all this, you DON'T have to feed your BD a mouse if you don't want to, just make sure they get there protein somewhere else, IE. Crickets/worms/roaches