There is a good possibility that I've posted about this before...sorry, if that's the case.
I'm grateful for our stationary bike. I ordered it back in November, and didn't get a whole lot of use out of it at the time. Now, I use it several times a day, it's therapy for me. There are time that I simply cannot bend my knee, and the more often I use the bike, the more I can bend my knee. Sounds like a win to me!