I chose to live relatively close to work. I didn't want to spend my life on the road, either in a car or on a bike. Right now it's about an 50 minutes to an hour each day. Some times I take the long way to get a little extra training in.

Winter adds a good 10 to 15 minutes each way plus additional prep time. That's about my limit. If I lived further away, I might go multi-modal or just choose to ride once a week.

Don't get me wrong. I like to ride but I don't want to set aside much more time to bike than I already do at this point in my life. If I do some non commuting rides I prefer to do them with other people and make it at least partially a social outing.