It's a bit like pre-takeoff safety briefs (which I think many pilots neglect even more), or downwind checks (which aren't technically all that necessary in some aeroplanes without flaps, mixture control or retractable gear if QFE was set already and you've checked fuel and wind on approach). Very often it isn't necessary, but if you are in the habit of doing it every time, then you won't forget when it's important.
So, I do a verbal take-off safety brief every time, even when flying on my own. I call "clear prop" every time, and most of the time I remember to do downwind checks, even in a simple microlight.
How do I do mine BRL?, Loudly!
G