You dont win a fight or prove how hard you are with your fists, took me alot of years to learn that, besides fists dont help when your facing someone with a blade or a gun.
There is always someone faster, harder or younger than you.
Stay fit and get old, fighting is for mugs, whats it prove, that your hard, so what, how many old hard c u# nts do you know .
But yes your right, all the katas and bag work in the world wont help you if you cannot take hits.