I live in Denver too and I haven't driven to work in 6 years. Instead of driving myself, I read, listen to music and chill out. I also don't worry about traffic, weather, or really much at all. It's great for drinking after work too.

I share your enthusiasm for the upcoming expansions, in particular the line to the Airport. The train is one of the big perks of living in Denver. It's awesome and only getting better.