Lol, +1 for the "arriving at work"...
Other than that, I think the worst part is trying to figure out if it's going to rain on my way back. When I wake up and it's really nice outside, but the weather report says it's going to be driving rain on my way home...lately here in Minnesota they've been predicting rain every day this week to. It's driving me nuts.
As for my actual route - my least favorite thing is probably sitting at stoplights. I have 2 choices - go 50% further, but stay on the greenway and official bike trails with very few stops on the route, or go the direct route with more lights, busy 4 lane intersections, but it's something like 11 miles vs 17 miles.