My problem with exercise is simply time. There are a million things I want to do and with a 10-7 work shift, I just can't do much. Staying 30 minutes longer happens easily so it's 7:30. Commuting to the gym would take another 20-30. 1h in the gym and it's 9 (or later). Commuting an hour home and it's 10. Go to supermarket, maybe cook something up and it could easily be 11 already. This leaves 1-2h max to do anything…
You don't need to go to the Gym. What you need to do, is to take ownership of your body and your health regimen. You don't need any complex mechanical stuff to do that. Bodyweight exercises are more than enough for regular folks and you can do them at home. Research. See what works for you. These guys have a terrific supportive attitude and great do-at-home courses to get you started https://gmb.io/
Aerobic: Do a run per week and walks on other days around your house. If you want to compress that time and are ready for some pain, do interval runs (research Tabata exercise).
You don't need the gym. Gym is marketing bullshit by an industry that attempts to monetize basic human functions. The only reason gyms are packed with exercise machines is because it's the cheapest way to offer some sort of structured conditioning without expert guidance. I.e it's the most profitable model for gym owners. It's not as good as free weight exercises (unless you are after some specific athletic goal, I think) for any sort of thing.
I found buying an activity bracelet with onboard pulse meter motivated me considerably. Polar A360 was good enough for me, but I'm sure there are better alternatives.