Going gym?

I might be considering going to the gym soon. Ain’t nothing going on in my life requiring any significant time. So I figured i might get myself in better shape than I am, so I have one fewer reason to dislike the person in my mirror. So here are my questions for those of yall who decided to go gym: how has it helped at all in your life? Good or bad decision? Gone alone or with a buddy? Did it help meet new people to expand your social circle?