You obviously don't have serious injuries. I was out of the gym for six years with a spinal injury and got back to the gym January of last year. In probably October, I tried squats for the first time (on the Smith machine, and lighter than my bench) and my fingers felt like needles were being pushed into them after every set. My hands were numb for a couple of days after. I will try again in six months...so I currently don't squat at all, and when I do it will be on the Smith machine at less than my bench. They will probably be one legged squats so I only have to deal with half as much weight compressing my spine, but promise to go deep, just for you.
You sound like you are in your 20s, and I envy that.