It's not ok to plateau at that level. You will get old, your strength and bone density will go down and it is a lot harder (but still possible) to improve those when you are old.
Much better to start with a lot more than the minimum so you have a decent safety margin (and lifelong habits that will keep you healthy for as long as possible).
Brazilian Jiu Jitsu (a large percentage of my training partners happens to be in IT).
It's a fun sport that keeps you fit but is also very cerebral. In a way it's a lot like playing a computer game where you level up your character. You program yourself to execute certain moves in certain scenarios. I have countless notebooks full of flowcharts and notes. Can highly recommend it.
And 10 reps is not low reps either. It's on the upper end of what people usually use in their workouts.