I have been wanting one for a long time.
I am no longer dependant on weather issues, or "what can I do with the kids" issues, or "hey, I feel like running, but it is 1:30 in the morning." <--okay, that hasn't happened, but it could, ya know?
I can run whenever I want to.
Incidentally, the treadmill is set up in the laundry room, so eventually, if it morphs into a very expensive clothing/purse hanger like I hear a lot of treadmills do, at least it is in the right spot.