I have family who live in southern Ontario who do this. They live in rural areas so they drive 1 hour to the gym, workout for half an hour and drive an hour back. I pointed out to them that in terms of cost, it would probably be cheaper to just invest in a home gym, treadmill and exercise bike and do everything at home.
Personally, my wife is sick with chronic illness so I can't go anywhere any more. So I just invested in a good treadmill, set up a TV in front of it and watch all my shows just about every day while walking. An average show is about 45 min or an hour so I take that time to do my walk at home and never go anywhere. The cost of the treadmill paid off years ago.
Also, as another tip, buy your treadmill or exercise equipment in January / February. Everyone always buys exercise stuff for Christmas or New Years resolutions in December / November ... then forget about it all after the holidays and sell stuff off or the stores put everything on sale. I bought a $1,000 treadmill like this about ten years ago for half the price and have used it since every year without problems.