Inside your house, wherever you spend the most of your time, you should use exclusively incandescent. Anywhere else, like closets, outside or the cellar, LED is fine. Your body NEEDS the near-IR light and we don't get enough of it because we don't have woodburning fireplaces and we don't go outside.

Fair, but incandescent has truly rubbish efficiency, and electricity is no longer cheap. Gas-discharge metal halide lamps will give you a better spectrum even than incandescent, and at an efficiency that equals or beats a lot of commercial LEDs. They're more expensive than either, of course, and they don't come small unless they add xenon and then the price goes higher still. I use them where possible.