Better be seen than be dead. Some people perhaps cross the line of sanity with the lights, but I can't hold that again them. Many drivers drive around the city with their high beams on, extra sets of fog lights, halogens and what not, most older cars have improperly adjusted lights, motorcycle lights are blinding too on and nobody gives a rat's ass, suddenly bicycle lights are too bright. F**k that, honestly.
I ride with two MagicShine lights on high, on bike paths I turn them off and switch to a lower power blinkie. On streets they're on high. If somebody has a problem with that they can go and f**k themselves. Seriously.
My posts are usually calm and polite but this bulls**t with "OMG, bike lights are too bright!" pisses me off. If it blinds you, that means it's working, if it bothers you, too bad, slow down or get out of my way.