Luck plays a role in this. My grandmother took so many falls, in the process broke her leg once, and then proceeded to take even more falls, and she was lucky to never break anything again.
I'm not saying falls are recommended for the elderly, or that they should take risks that can lead to falls - but luck, just like I'm anything in life, plays a role.
Some people can't afford to live like they're made of glass, with all the support a available for them to prevent such events.
If you're not a wealthy elderly, or if you don't have a family willing to take sacrifices, then your luck starts to drop A LOT.
doing something more doesn't make you better at it. learning to do it better is what makes you better. people are quite capable of doing a lot of something without ever getting better.
