Reality is complicated and nuanced and attempts to boil reality down to single concepts or dimensions are always full of ifs and buts and end up not really hold

Reality is complicated and nuanced and attempts to boil reality down to single concepts or dimensions are always full of ifs and buts and end up not really holding up when you look closer. Everything is selfishness is an especially lame theory of everything. Start asking who the self is, and what the benefit is and you're going to quickly see that you can't define either without completely washing any value out of your theory of everything. In the end it doesn't serve much purpose beyond justifying selfish behaviour.