I didn't say that it does have an obligation to do any of that. If anything it's the opposite, I think Science should abstain from turning moral issues into materialistic "facts" which is what they are attempting to do by turning everything that used to be a character or moral issue into a biological or physiological issue so that now every criminal, misfit and glutton is actually a victim of mental illness or addiction (and addiction is a physical, biological phenomenon) where conveniently all agency and personal responsibility is removed and no one can be blamed or impugned for anything and no one is ever at fault. I don't know what is even supposed to be left of a person when bad choices are not even choices anymore, as if only good choices are real choices and we can go around patting ourselves on the back forever. It's just so pathetic and absurd. If you need to tell yourself that being fat, dumb or lazy is not your fault, go ahead, I'm sure they'll discover a biological basis for laziness soon enough and we can all call ourselves differently motivated or whatever stupid euphemism they'll come up with and breathe a sigh of relief. At the end of the day you're just lying to yourself.