Mathfags don't only envy CSfags pay, BUT ALSO the fun their researchers actually have, since most of CS work is highly applicable and you can actually feel it having a difference in the world, instead of proving some conjucture that no one cares about or whatever.
COMPUTER SCIENCE RESEARCH IS FUN, DON'T DENY IT. Imagine the feelings of "eureka!" that future CS scientists researching general AI will have, the pioneers of speaking with a silicon inteligent mind that you built yourself after lots of effort, it would be better than fucking heroin.
Meanwhile, mathfags will still be playing with their theorems or some bullshit in the hope that maybe in 1000 years will be relevant to someone, it must suck to be a mathfag.