Thanks everyone.

I have no health problem that I know of, but a 50 years old can have any kind of health problem any time.

Cane or stick is a good idea. It would help in case of attack by teenagers, dogs or for possible falls and hurting ones ankle. Would it be too far ( paranoid ?? ) if I think/plan for sticking a knife at the top of that stick like a biounette ? In case of a dog attack a spear is perhaps better than a knife.

Prblem is, there is no mechanism I know of that will allow a knife to be attached to a stick in seconds.