I have an artesian well, solar, wind, and hunt/fush/grow most of my food. The neighbor has a small farm. I'm also very remotely located.

It really isn't a prepper mentality. It's just how I prefer to live. Quite a bit could happen and my life would remain fairly unchanged.

I don't have these things so much for what people picture as emergencies. I have them because they are pretty necessary to live here. We have fairly high winds and blizzards that mean mains power is not very reliable. We have ice storms that shut things down for a while.

It's a bit of work, but it is enjoyable labor.

Can you share your location +-300km ?

Outside of Rangeley, Maine. Not far from Mt. Washington, which holds the land wind speed record. I usually get about 12' (somewhere around 3.5 meters) of snow), maybe a bit more.

Are you talking about hot water heaters?

I wonder if there are more in garages or more in basements. Hmm.

Where I live, basements aren't really a thing, but I can see how it could be problematic if the water heater was in a flooded basement. I wonder if you could rig up a manual air pump to force water out of it without using the drain tap at the bottom, though.

Most worldwide don't actually. Suburban single family homes, sure. Apartments and the like, much less so. Even less so, in non-western countries with electric under sink heaters.