I too was infantry. And muscle memory doesn’t necessarily mean always being engaged to the process, it means being able to return to the necessary posture when needed.
It wasn’t uncommon for us to rest our hands on our rifles too when we didn’t need to be actively engaged in the current situation in any hostile fashion.
Yes, you see… i want the taxes I pay to go to helping people. We could instead, say, stop giving as much to the DoD. We could raise taxes on corporations and close off shore loopholes… you know, basic good governance.