I have another sport, swimming, to get me out of the house, but I know I really should be lifting weights at least once a week. Sitting on the home trainer watching a video is low on my list of favorite things to do, but it's all my better half wants to do in the winter, so I feel I need to do it at least twice a week.
Maybe we'll have enough snow for XC skiing this winter. I'm walking home from work a couple days a week to try to prepare my legs for it. It really does help to have several activities that you enjoy. I don't think exercise should be this boring bitter medicine to be forced to do.