For the greater good…?

Found this in one of the comments on a blog.

“Now, there are many animals and plants suffering here for our research. Do I invoke christianity? No, sometimes for the greater good you may do researcher on cancer on rats or brain monitoring of monkeys.”

My first reaction was simply ‘wtf’. I think he meant for ‘greater money’, perhaps. Why don’t these people test stuff like these on themselves?

Who gives them the bloody liberty to harm another living being and take everything on this good earth for granted?