I live in Silicon Valley close to San Jose. I am 68.You should spar though, but with foam weapons. Where do you live and how old are you? Look for Larping groups called Dagorhir. There are dudes in their 70's playing that and they're really good.
The skills you'll develop is very realistic. These Larping people are just as good as FMA dudes with their Escrima sticks.
Also be careful on the type of cane you carry; depending on your City. You're not in San Francisco, are you? Like those massive, Irish Thorn or something, those are clearly weapons in some areas. I like the classic, old guy canes that are beige; carried by the Monopoly Geezer.
These are my canes
#1 is for hitting the bag, #2 with foam handle and #3 with no foam. I modified the cane so they look innocent. They are United Cutlery Night Watchman cane, I cut the hook at the handle off. It's made of Nylon, about 20oz after cutting to this length.
Yeh, I know, They only want to throw the book on law abiding citizens, but they let the criminals out without bail.