If you could pick any MOS, rank, and/or branch in the Military, what would it be?

I updated this thread a bit to correct a few words.

However studies have found that a person whom works as a dishwasher getting a high salary pay is less happier then one whom is (passion for photography) working in that field is. Further it is also known that the one whom is working in the photography field is less attentive to there income as someone whom is a dishwasher.

I used those careers as samples only, but while no one really desires to be a dish washer (Change dishwasher for a job you don't like). The photographer (Change photographer for a job you have a deep passion for), is most likely to work for less pay if need to for the sake of doing what they enjoy most or what they are good at.

These studies done however are out dated and don't match todays present time condition, but many whom are doing what they enjoy are happier then those whom are doing work they really dislike.

Knowing this, if every one were doing what they enjoy would this change the military over all for the better?