one I think about a lot: having abundant hot water (for cooking, showers, baths, cleaning, etc.)

and echoing what others have said, having abundant potable water.

I also haven't ever experienced a famine in my life - I have experienced more food security than most generations before me. (For me the worst case experiences were eating food that was thrown away, not eating weeds from the yard because my belly hasn't had any food in a week.)