I live in a commercial area on a corner where 5 streets meet. It gets anoying but sirens arent as bad as car alarms. I want to take a brick to their window every time one goes off at 4am. Everyone with a car alarm needs to get their car broken into. You are very rude and selfish people. I leave my car unlocked anyway. That is what insurance is for.
A couple of weeks ago, both mine and my neighbors car got broken into. They just opened my door, saw my stereo is crap. They took my cd visor but dropped it on the sidewalk after they saw it was all burns! Nothing was stolen from me. But my neigbor had her window broken out, stereo stolen all while her car alarm was going off. Those things are soo useful.
Sorry for the rant, but the only loud annoying noise I tolerate is my alarm clock.