I remember when we (okay, I) started doing squats, air squats, front / back, KB, anything that required me to drop my ass toward the floor, with or without equipment, I would see these frog squats and silently, in my head think "oh hell no".
Last night doing back squats, I'm still working back up to my pre-injury max, which was 170#s, I was at about 120 and one of the coaches comes by and says "You're getting a lot better depth in your squats. Great work!" I don't care who you are, when someone who is ridiculously good at breaking form down and really focuses on it gives you a compliment, that feels really good.
I have depth.