There is absolutely no greater high than challenging the power structure as a nobody, giving it your all, and winning. I think I've learned that lesson twice now. The essence of successful revolution, be it for an individual, a community of individuals, or a nation, depends on accepting that challenge.
Democracy is not something you believe in or a place to hang your hat, but it's something you do. You participate. If you stop doing it, democracy crumbles.
I learned one thing; you never do anything for fame or money. You only do things 'cause they're fun or good. If you can combine the two at the same time, you can make a contribution to the world and have a lot of happiness.