"for what?" I don't think you are a measure of what is meaningful for other person and what's not. If I choose to work 12 hours it's my free choice, not affecting you, and I may have my own reasons.
If I don't want to do so I will find another job. If there are more capable people like me employers will have to change conditions to attract talent. But I won't modify my reasons to other peoples ideas about what is meaningful and what is not.
I think part of the complaint is not that people have different goals and motivations for doing things; it's that they often engage in behaviour that is actively counter-productive to achieving their stated aims.
I agree with you, many peoples acts are not in harmony with their values but I am not sure society can solve this in an effective way, without imposing limits. If your acts are not crossing the boundaries of another's rights then in my opinion as long as you have options to make a change then this battle is for everyone to win by themselves.
