I can basically guarantee he is not gonna change gay marriage or vaccines.
Don't really care about women not getting late term abortions... how about learn some responsibility or get an abortion in the first 8 or so months if thats your plan? Not a big deal for me but maybe I am wrong on it... I dunno.
Environmental crap probably isn't a big deal unless he is lax on local air quality/water quality.
The fact is long-term the current risk/reward for current emissions reductions and so simply won't make much of a difference and with the China's of the worlds not giving a fuck at all it furthers adds to its irrelevance.
We will need solutions for those problems in the future but our current ones simply hurt us without helping much so its dumb.