My parent’s actually live in a solid concrete block home. They paint it just like you would a wooden structure that doesn’t have vinyl siding or such.
It’s really incredibly sturdy, and I just love it.
My love comes in no small part that they live out in the country in the middle of a big old field where you can see the storms coming at you from afar.
That’s pretty scary to behold, especially during hurricane and tornado season. However, a block house can weather just about anything at all.
Unless a tornado lands smack dab on top of it, you are about as safe as you can get inside that house during the worst weather.
I will say though that it is very difficult to heat and to cool. That would be the downside I suppose.