I've often wondered about this, is there a good reason other than appearance to get rid of them? They're not noxious or poisonous, in fact you can eat the greens, they bloom early and all summer, and attract pollinators. I happen to think they're pretty, and other than wanting a golf-course-style lawn, why would I go to the trouble of removing them? I'll pull them out of flowerbeds, where they don't fit in, and the garden, but I don't even worry about them anywhere else. They're pretty, require no care, and after I mow, you can't even tell they were there for the most part. It always seemed like one of those things we do because whoever we learned yardcare from taught us to (my Mom taught me), but we never stop to think why and if we still need to. I could be ignorant of other reasons so I'm curious why folks spend the time/chemicals to get rid of them.