And I'm free to eat a bag of chips whenever I want.

I think if you seriously hold those views you should consider the fact that there are many reprehensible individuals which thought exactly like you do in the past. Though the groups they chose and the reasoning provided varied, all being equally irrational, they found reasons to neglect if not outright try to erase individuals which they perceived as somehow inferior to themselves because of their lifestyle choices. They falsely thought, like you do, that society would be better off if these individuals were not part of it and "punished" for their lifestyle choices.

This is a point where you need to actually realize for yourself what you're arguing for is reflective of a worldview which is objectively evil. You need only to look up the horrors of eugenics, of every ethnic genocide, of every society which chose to discriminate rather than uplift its members.

From the way you speak you seem to think that those who are strong or smart or talented have no duty to anyone but themselves. But you fail to realize that one day you may get sick, one day you may be old, one day you may be involved in an accident through no fault of your own, or by means of your lifestyle choices. At that time, you will need people to care for you, and you will realize exactly what I'm trying to tell you here.

For reference, the way you think is not new. I suggest you look through the chapter in Plato's republic where Socrates speaks with Thrasymachus about how "might does not equal right" to gain perspective on this. Thrasymachus held your worldview. It was one of the first positions that Socrates showed to be indefensible.