City is bad enough, A roads just scare me.
Generally, I don't mind too much commuting. Most of the time I'm going as fast as the traffic anyway which actually makes it safer - yes there are more cars but the speeds are lower and they can't manoeuvre as much. The downside to all that is I *have* to ride fast, it's not a ride you can just do at pootling along pace, it's a full on effort from fast cruise to full on sprint.
It's actually worse during school holidays - less traffic means that what there is there now makes the most of it and boots it around at much higher speeds. Same on (some) country roads, yes they're generally nice and quiet but because of that, (some) drivers will take the opportunity to drive at insane speeds.