ok...
1) yes it would, and how? they would FLY. for example: if they wanted to kill a whole plane, only one guy would fly into the air, fly into one of the propellers, and bam: dead. or would there be no planes?
2)pretending...ok: there would BE more danger. especially when your sleeping/defenseless. or would that be cured too by a personal bodyguard with wings? o.O so... more endangered animals? we already raise cows and such for killing. plus, by the time we evolved, there would be other technology that would do the hunting (aka constant slaughter of animals) for us. i put what i did in parentheses because although there may not be much of it now, there would be if we created technology to shoot anything that moves. we WOULD run into each other with giant metal objects? not helping your argument there...and even if you meant to say wouldn't, loosing power of your wings would cause you to fall. again, easier for assassins, just chop a wing off. you only have to shoot it once actually (Max: A Maximum Ride Novel by James Patterson).
your opinion definitely depends on what side you look at it from...thats kinda what opinion is. how well adjusted...only time would tell. over all, i think there would be more deaths, but then again, you could argue for natural selection/people less likely to drink alcohol, maybe?