I find lifting after work very difficult. Often I work ten-eleven hours. The last thing I want to do is step into a gym, never mind lift heavy stuff.
There's that too. It was best for me when I would go to the gym at lunch. But, my only option for that at this point is 118/mth, and I got tired of paying that for only getting down there 2x a week due to my job.
Now I have everything in my basement, but it's still hard to find time.