If you can tolerate riding distance on mt. SPD, then go with what you know. There's no point in trying to learn a new pedal system especially when you are tired at the end of the day.

I used SPD exclusively on all my road and mt. bikes for decades until I developed nerve issues in the small toe/ball of foot, also known as hot foot. I subsequently discovered that SPD-L's larger cleat surface area better supported my foot, which is the only reason I use them for long road rides. I suck at clipping in on them and would prefer mt. SPD otherwise.