I agree with you 100% on this issue. I am out there for me and me alone. Of course if I come across another hiker in trouble, injured or who has misjudged their food supply I will stop help them out or share my meals with them. I am one of those people that believes by helping someone else it will come back to me two fold.
It does bother me when I come across a hiker who somehow got more than a scratch that only carries a couple bandaides and I have dig into my kit to fix them up. But being a former paramedic, and current wilderness first aide and first responder I just put it behind me and help those people.