[rincebrain]

That's not necessarily accurate.

I have various other sleep problems, but fortunately none of them are caused by/cause me to move while asleep, not even so much as rolling onto my side.

But a great many people are not so perfectly immobile, sober or not, and if you haven't had a problem with rolling off a sleeping surface or breaking things by moving in your sleep, you likely won't consider it a risk.