As for safety: ATGATT means full face helmet. Nothing less provides adequate face protection if you go down. Also DO NOT pull up on the bumper of a vehicle at a stop light and cross your arms like you're a hero like a lot of motorcycles do. You do not leave yourself an exit if you do that. Stay back a bit and watch your mirrors like a fat mouse at a starving hawk get together. That way when some speeding comatose driver doesn't see the stopped vehicles in front of them, you can escape between lanes and not become a motorcycle sandwich. (BTDT)
In addition to that, I keep the bike in gear at stop signs/lights ready to go.
One of my friends just got his motorcycle license. I've been training him my way, and it hasn't taken very well, partially because he's still got a significantly worse case of the "I know everything" attitude than I do (strangely enough, I was always a big proponent of ATGATT). He uses the "Well I won't ride very much" as an excuse, which, while it does statistically reduce your chances of getting in an accident, is no excuse for not practicing good safety behavior.
Biggest advantages you have on a motorcycle are that you're small (can fit into small places) and fast (can get out of situations quickly). That's the best way to keep out of accidents.
Motorcycling is the one activity I've been a part of where I actually know a good number of people who've been injured or killed while doing it. I will say that about 80% of the accidents were completely preventable, though, it was stupidity of the rider that caused it. The rest were stupidity of the motorists in 4-wheeled vehicles.
What ****es me off is when I see motorcyclists who give other motorcyclists (like me) a bad name. Last weekend I was driving the truck with a trailer with a car on it, and I see a motorcycle coming up behind me (I always pay special attention to other motorcycles). I put my right turn signal on to change lanes, and when I get to be about 1/3 of the way over into the right lane (from the middle lane, and the left lane was clear), this guy then decides to pass me - on the right, with a left lane that was perfectly clear. If I hadn't been looking for him, I would've run him off the road or run over him. Either way, he makes the rest of us look bad. I hate people like that.
My first motorcycle I ran through the winter as my commuter vehicle to school. Only time I didn't run it was when there was snow. I actually rode home in snow once (about 2"), that was fun. My second motorcycle I rode through the winter, as well, mostly on 70 mile trips one way.
For me, it's not fun to have to get all the gear on to go to work, and then take it all off when I get here, then have to put it all on again to go home, because it's a hassle. If I'm going to put the gear on, I want it to be for a fun trip, i.e. I don't have to take it off when I get where I'm going. Even if I'm just riding to go get ice cream, that's fine. Maybe once the weather gets nice when I go to New York for weekends I'll leave the dog at the kennel and then ride the bike in.