AC is strictly better for home use. You can just throw a transformer at AC and you get a different voltage, and then a couple diodes and capacitors give you the DC voltage you want. DC is more complex (generally you turn DC into AC and throw it into a transformer then back to DC - the only advantage of DC is you can turn it into high frequency AC which allows for a tiny transformer). Most things that want DC want very low voltage DC, which doesn't travel long distances well, and there are a number of different DC voltages things that want DC might want.
Almost all DC power supplies are switching power supplies these days, which convert AC to DC first, then use DC-DC converters to get to the final voltage. I would think AC transformers are quite rare in homes these days. Maybeeee some microwaves? But the majority of power consumption is happening after rectifiers.
Edit: another thought, most chargers and other low power DC power supplies will actually work just fine if you feed them sufficiently high voltage DC rather than AC. The recifier just doesn't do anything! I used to power my laptop charger directly from a lithium battery at about 100 volts DC with no trouble.
I got the impression there is one place for medium voltage DC in the home. Solar panels have inverters to make AC from DC, and batteries also need to convert DC to AC. It would be more efficient if the solar panels and batteries were connected directly with DC, and if there was a single, efficient inverter. It makes the most sense to use the battery DC voltage, and then solar panels have variable DC converter.
It would make sense for off-grid home to distribute DC. DC appliances could be more efficient but they don't exist. Everyone will use inverter and AC wiring.
USB Power Delivery handles these issues. I suppose if the house is large there'd unfortunately need to be multiple transformers, maybe one per room instead of per device.
