I love animals in general, including mice. I see two areas of concern to this site - rodents being used for scientific research/testing, and rodents being used as feeders for pet snakes, etc.
As far as the first area…While I strongly agree that all animals need to be respected and treated as humanely as possible, I also contend that mice have proven invaluable to helping further legitimate (yes, there have been many illegitimate, but I do not put forth those examples as valid arguments, and rightfully condemn them…) research that has led to treatments and cures that have provided relief - and saving of millions of lives - to humanity. Mice are heros in my book for that reason alone. I’ll also be the first to say quit using them for that purpose if another equal or better method of scientific inquiry/testing is found, but for now, there isn’t a better one.
The second area - used as feeders - that one has solutions already. I have read that there are viable, nutritionally equivalent (maybe even superior), and affordable alternatives to live feeding of rodents to snakes, etc.