Lifespan for lcd display

I have a Korg keyboard which I practically never turned off. Over the years the display became dim and eventually the backlight failed completely. Because there is no off switch on the Beatbuddy I tend to leave it on even when I’m not using it. Is there a possibility of the display fading over time just like it did on my Keyboard?
The volume wheel for the headphones has an off switch., to me that seems really unnecessary. If you don’t use headphones you really don’t need to turn that knob off.I wonder if it would not be better to have that switch turn the pedal on and off. What do you guys think? Or am I missing something important here?