I could tell you stories about them but you would not believe me
Do they involve Bill Murray?
does it really matter that you can't see the individual droplets of blood flying off dead people?
Of course it matters, what kind of gamer are you?
GiMP should be looking more and more attractive to professionals as this sort of thing goes.
You're implying it is somehow comparable to Photoshop. You're wrong.
for a couple of dollars
Try free as in beer and freedom. http://sourceforge.net/projects/classicshell/files/
It seems that more and more mathematicians are using a new, high level language named "research student".