I've never forgotten to turn it on, but definitely forget to turn it off at times. Usually notice when I finish eating.
The reason why it gets left on is I usually am taking something out of the oven before I'm certain it's done, then an serving up a plate and forget to turn it off.
We were looking into remodeling our kitchen soon. Most places start at 70k-80k, and it just goes up from there. It's insane, we're no longer planning to remodel.
It sort of makes sense with Britain no longer being part of the EU. At least, that's the only reason I can think to put it that way.