Used to have some coworkers pressuring me to join the cycling cult. Never mind that I hadn't been on a bike in twenty years, was 10 miles away, and heavy traffic most of the distance, they would be utterly convinced that it was perfect for a beginner. I also saw one of them on the road riding her bike in the most dangerous way and never stopping at signs. I was getting exercise at the time, it just wasn't cycling so I don't understand the "join us!" attitude of those damned militants.
Heavy traffic usually means I can make it home on my bike faster than I could in my car. And that's with stopping at red lights, etc.