The title made me think you were discussing something a tad more kinky, as in

.
Anyway, loving to help people and obtain pleasure from others happiness are NOT necessarily submissive qualities; just empathic ones. Mother Teresa liked to help other people and devoted her life to doing so; that doesn't mean she liked being tied up!
Like anything else, submissiveness (and domination) is like sexual orientation; it's not an either-or kind of thing but a spectrum. Some people are more straight (or gay) than others, many are bi or at most only weakly prefer one or the other gender. Sub/dom preferences are equally shades of gray. However, chances are that if you have trouble enjoying the submissive role (at least, under *any* circumstances), then it's probably not for you. But you need to check reality; are there some circumstances where you would enjoy it more than in others? I myself would enjoy it only with certain people and under certain circumstances (I enjoyed being tied and dominated by my cousins; I would have hated it if tied by adult strangers). I enjoy TUGs, but definitely far from universally. Heck, that's perfectly normal.
Dare to be different... and make a difference.
To boldly go where no one in their right mind has gone before...