Here are a few eminently quotable quotes from that fount of ancient wisdom (har har), Lazarus Long (with a nod to his creator, the noted SF author Robert A. Heinlein):
Certainly the game is rigged. Don't let that stop you; if you don't bet, you can't win.
If you are part of a society that votes, then do so. There may be no candidates and no measures you want to vote for...but there are certain to be ones you want to vote against. In case of doubt, vote against. By this rule you will rarely go wrong. If this is too blind for your taste, consult some well-meaning fool (there is always one around) and ask his advice. Then vote the other way. This enables you to be a good citizen (if such is your wish) without spending the enormous amount of time on it that truly intelligent exercise of franchise requires.
And my personal favorite:
Writing is not necessarily something to be ashamed of---but do it in private and wash your hands afterwards.