This is why I dont understand why people expect UFOs to have lights on them. Or when they see lights they go to UFO. Why ? Why would external lights be helpful

This is why I dont understand why people expect UFOs to have lights on them. Or when they see lights they go to UFO. Why ? Why would external lights be helpful when travelling interstellar distances. Then if you have the technology to travel these vast distances so quickly, why would you need lights when darting about at "slow" terrestrial speeds, the technology you must have to navigate and avoid things must be so beyond just lights... You almost certainly aren't navigating in anything that remotely resembles looking out your craft ? It just makes no sense to me. IT's why I assume if anyone mentions a UFO when talking about lights in the sky I'm totally convinced it's terrestrial in nature.