But I think for some people it’s possible that the payment itself acts as a spur to exercise (I’m paying for it so I’d better use it). Of course the gym owners are counting on this not being true!
Also I just want general fitness, health, and ability to do specific things I want (bike/swim/kayak/backpack/ski), which means bodyweight exercising (including TRX) and hand weights are 95% of what I need -- most of the gym equipment is great but unnecessary to me (YMMV)
I'm kinda into flywheels right now. Not too hard to DIY, basically unlimited resistance, very low space, and if you can figure out how to do a vertical and horizontal pull - you can get a full body workout in pretty efficiently.
And how can you know you're doing progressive overload with them? With weights it's easy to tell you're going up in numbers, how can you quantify gains with flywheels?