If you have the space you can train at home. Wish i could have the space for a homegym.
I used to go to the gym but stopped as I got bored. I love working out at home. All I have is some dumbells and a mat (which is technically a camping mat to sleep on) and I don't feel I need anything else. Oh, and I definitely didn't spend much money. You can do whatever you set your mind to. It's all in finding the right workout/exercises for you. Then just stay motivated and you will get great results.
Yeah I wear trainers and some comfy clothes. I have some running clothes I like to wear too from when I went running but had to give that up til I get my knee fixed. I vary between 15 mins to over an hour (not by much). This app is great to work up your stamina and get some muscle tone again. Anything you might want to achieve really. I'm sure you'll be able to get back to the same physique you had all those years ago if it's what you would like :-) I for one feel I get more results at home than I did at the gym.
I have a membership as well but it's so packed at the gym that it gives me anxiety. ..I been working out at home with resistance bands...exercises ball and my own body weight...it seem to be working. ..I Google all types of work out and I take few ideas here and their. Good luck!!