driving, lacrosse and calculus and not natural, innate human emotions, happiness itself doesn't have to be learned, the actions it takes to make you feel that innate human emotion is what has to be learned

Spongebob did a good job for me. Karamasov brothers, talks with my parents. Man, you really shouldn't use the word "We" because you are not speaking for me. Or allot of people really who got into religion to learn how to be happy.
Muscle contractions in the face do not equal a boost of serotonin or happiness.

Happiness is a choice... as is hatred and anger. Sometimes it can be a difficult choice to make.

I think happiness can be engineered :) x

Happiness is intuitive whereas the things you quote are not. To put it bluntly if you tickle a baby it laughs if you slap it, it cries, nobody needs to tell it to do these things. Some more complicated things may be enjoyable but without understanding you may not find them so, as an example when the comedian Peter Kay announces, 'I've seen the future, it's garlic bread.' I wondered wtf he was on about, having seen the whole preamble to that joke I found it as funny as anybody else.