Like, we’re destroying the one place we know is a sure bet on where we can prosper if we keep it healthy, but instead the world’s richest man is trying to expand to other planets while this one’s ability to sustain life is in jeopardy. IMO that makes us potentially a very stupid species compared to a species that doesn’t really care about meeting other aliens because they value the life on their own planet far more than we do.
Just because nothing happened so far, doesn’t mean nothing will happen in the future. Just look at some of the volcanoes we have around. They may lay dormant for millennia, until they don’t. Same principle for pretty much everything this universe has to offer. It’s safe until it suddenly isn’t.
Also, we have several billion people on this planet. I think we can handle tackling multiple problems at once.