Even on my lesser non Mac amps that have that ability I don't do that. Akin to saving your headlight bulbs by not driving your car at night.
I have no choice. My MC 2505 has no switch.
I know a guy who says he is "saving" his high beams for "when he might need them." As for myself, I like to be able to see as best I can at all times. (I do dim them for oncoming traffic!)
Lights on....bulbs blow, replace them.....all good..