I'm the same, as well. While for some it's been beneficial for them and their lives, I don't really see the point since, as you said, it feels disingenuous and not very realistic in a lot of ways. I do think people believe in the "new year, new me" mentality, and that's not a bad thing to hold onto mind you, but unfortunately a lot of times it fails because that motivation dwindles within the first few months into the new year. I do think having a kind of overall goal is important to keep, but it should be something sustainable and something you know can be achieved.