Cut down on that crap weed or crack you're doing chug down some nice psilocybin shrooms, it'll do you good. Does good both for IQ and serotonin according to research.
(/jk, of course! drugs are bad mmmkay)
It's not only preference, but sure, some games i will agree with (any third person game which require very precise aim for shooting). Analog movement (impossible with a mouse which only has analog aim) is a big plus in any game that has for example platforming or heights, it has nothing to do with preference.