Contrariwise, I weight myself pretty well every day. It is (to me) interesting to note the variations, both random and weekly. For instance, my lowest weight is usually a Thursday. I do try not to stress if it goes up, and it's nice when it goes down.
And I'm feeling just a little smug at the moment as I hit my target size this morning, a month before I aimed. However, as the main reason for getting to that weight by then was to allow some slack for the re-enacting weekends over the summer, when excess food and drink seem to be the norm, but which are now all being cancelled, it's no longer quite so important.