We live in a condo with our own gym downstairs and for several years, my husband and I used it diligently as we were training for 5K and 10K races and needed to run on the treadmill. This year though, we started thinking how we'd been doing so much cardio and not enough weight training that our upper body strength was going way down, so we got a home workout program (P90X) instead.
It's been so much fun! No more getting dressed to go down to the gym, no more waiting for other people to get off the treadmills. We exercise whenever we feel like it and it's been a real blast!