Our solar system is fortunately well beyond Betelgeuse’s “kill zone,” so even if the star decides to call it quits, the only way it can ruin your day is if you really, really liked Orion the Hunter without any supernovas on the side. Apart from people with access to high-powered telescope equipment and other Star Wars-type space stuff, we probably wouldn’t see the supernova exactly color the night sky red, either. Still, that doesn’t mean it would go unnoticed: According to calculations, Betelgeuse’s demise would be “16 times fainter than a full moon, but 100 times brighter than Venus,” so you could definitely see it with a naked eye even on a clear day. 

Scientifically, the situation would also be exciting, since supernovas on our relative cosmic backyard aren’t exactly commonplace — in fact, there has been exactly zero of them during humanity’s “telescopic era.” So, while it’s impolite to suggest that a celestial object should just explode, it would certainly be pretty cool if Betelgeuse did precisely that.