>>528958169
on my current keyboard (shitass K120 from like 15 years ago because WASD on my more comfortable one is falling apart too much for WT) the side of my thumb rests on the left edge of spacebar in neutral position, but there's too much key travel distance/force required to depress it with either 1. using the muscles in the base of thumb and hand to push thumb down sideways, which is not super comfortable and interferes with using other fingers simultaneously, or 2. stretch out thumb fully so the bottom of thumb points downwards and I can just bend it along the joint to activate it without using the rest of hand, but stretching out like that isn't super comfortable either
when I reach for alt with thumb it naturally curves so that the bottom of my thumb is on top of the key and I can just use the joint movement to press it without stretching or involving the rest of hand, which is far more comfortable