To each their own. I don’t use them.
A trained eye can spot flare and loss of contrast when the sun strikes the front element of the lens. When this happens, I (or someone with me) will shade the sun with a hat or flag it with a portable reflector/diffuser I carry with me. Lens hoods are cumbersome, get in the way of my filter system, and are extremely poor at reducing and/or eliminating flare, glare, or contrast loss anyway. Learn to spot it yourself – don’t solely rely on a lens hood to eliminate it because it happens to be on your lens.