Reminds me of advise someone gave me. Deadlifting gets rid of back pain. So I don't have an insane amount of weights, but I have roughly 30 to 40lb I can deadlift at home, which does not sound impressive at all, but coincidentally, mundane tasks that would give me back pain no longer did. Also coincidentally, my ability to do pull ups went from 0 to several reps per day. When I stopped, the back pain came back, but now I just deadlift once a week, I picked a mundane amount of weight that is easy, I take my time unless I feel like I can do it quickly with the smaller amount of weight.
You don't need to lift 300lb or whatever and weightlift max to make your body more efficient, you just need to weight lift just enough that you find yourself somewhat getting tired, I don't even work out until I am tired sometimes, and it still feels like it does a lot for my body.
So I've come to learn that in general exercise is good for you overall.