Not sure where you're getting your facts. I'm sitting in a house with all of these things you claim don't exist, and I'm not an anomaly where I live. My water heater, cooking stove, furnace.. all electric. Most of it installed in the 80's and all original (other than the water heater which has a 10-15 year lifespan).

Electric water heaters and baseboard heaters are common, and extremely efficient. In fact, resistive heaters in the scientific sense (watts in vs. watts out) are the most efficient form of heating.

They're extremely reliable and cheap because of how simple they are.

They may not be _cost effective to run_ in many regions due to high cost of electricity (per watt as compared to gas). But here in BC Canada, resistive elements are extremely common due to relatively cheap power (Hydro in our case). For whole home heating, heat pumps are usually used in new builds because of their advantages, but they're still very tied to the grid and have elements in them for defrosting and the like.

If you scaled up nuclear you'd similarly see prices of electricity drop, and if you have the grid infrastructure (or build it), electric heating (for your home, water, cooking, whatever) becomes pretty attractive.