>There are examples where "what he wants them to do" can actually be for them to vote to help themselves.

This simply isn't the case. It presupposes that you should know what the other person wants. You don't... and even when you know it (because they've told you), you ignore it because it's not what you would prefer that they want. It's a really simply concept, but you're probably incapable of conceiving of it. Other people in the world around you are props that the universe invented so the world could be as you envision it.

>For example, people voting to give themselves, their family, and their friends better access to health care;

I don't want "better access to health care". I know what you mean by that phrase, but I do not want this. My brain doesn't work like yours, I do not have the same preferences or desires that you do. I am not "voting against my interests", it's just that my interests are alien to you. I understand your preferences quite well (to a degree, at least) and I acknowledge that those are different than my own. You, though, can't acknowledge the same of me... the best you can come up with is that I'm somehow mistaken, confused, or brainwashed. Even this comment is likely incomprehensible.

>So people are screwing themselves/family to screw other folks over.

My family wouldn't be better off from this... we're not cattle for the farmer to provide health care for. It is not harming me or mine, we're up to the challenge.