re: How many of you squat to depth?

Why do you want to squat arse to grass?
Just past parallel is a squat.

When I first started lifting in my late twenties, I practiced unweighted squats in my bedroom at night while watching TV. At first, my body just wouldn’t get into that lower position well. Had to teach it to.

Now in my 40s, the issue is more shoulder mobility than anything, on low bar squats.
Usually just doing the warm-up sets is all that’s needed to get the required flexibility. I do 6-10 reps with just the bar at first, and I do them slowly after working the bar into position on my back, and then consciously thinking of my knee position, hips, etc. through the first reps.