Well, I'm over 50 years old and still under 150 lbs.
I've had a two surgeries in the last two years that have slowed me down a bit, and I'm carrying some metal hardware in my back that I was not born with.
As a result, neither running nor fighting HTH is a viable option for me, at least against a young, full sized, determined aggressor.
But that's okay; I don't go into bad places after dark...actually not at all. I don't go unarmed anywhere unless the law demands it, and that is mostly within my control.
And I have no reservations about fighting hard. I am under no illusions--it has been many years since I've been in a fight, and these days punks play for keeps. At this point the next fight I find myself in may very well be my last.
I intend to avoid it if at all possible, and that is not possible, I intend to win it. I don't expect it to be easy, so I practice regularly.
I don't carry OC, Mace, nunchucks, a knife or a policeman. I carry a gun, just one, and I know how to use it.
I hope that I will never use it. And if I ever use it, I hope I do my part.
Because I love a happy ending.