Beyond this wouldn't it provide good information on the effects of a comet impacting a planet. We have a bunch of stuff on or above Mars. Isn't there something

Beyond this wouldn't it provide good information on the effects of a comet impacting a planet. We have a bunch of stuff on or above Mars. Isn't there something to learn by seeing the impact with probes so close? Or do we know everything there is to know about such impacts? The trouble with "getting serious" is there are far more threats on earth which are far more likely and thus more important to deal with. Why give big focus to a potential extinction threat when there are many flash points around the world. Korea for example. You then have the rising threat of cyber attacks. I wonder how well the general population of a country would do if it lost power for a week or two. I woke up with no power and when it came to making breakfast I felt a bit lost.. A few weeks ago someone in UK had a new virus and was in an isolation ward. I would say as we become even more over-crowded and travel becomes even easier a pandemic would potentially be as devastating and more likely than earth being hit by a large object.