[JaBlue]

"The problem with all that is that there aren't happiness points, and you can't mathematicize happiness."

Not sure what mathematicization is, but valuation and comparison are all you need. Some choices make you happier than other choices and some choices make other people less happy than other choices. You can approximate how your future choices will effect you and others based on experience. The question is how to act and why once you've done this approximation.

If you don't like my examples the way they are, maybe add a couple zeros and the word "about" and I think they should be acceptable.

"I guess you could argue that when I help others, I only do so for selfish reasons (i.e., it makes me happy to help), but I think that point of view is really solipsistic and wrong."

More on this please. All I see right now is a claim and no support.