If you have to ask that question, you do not know how to squat. It is obvious that you do something wrong, because if you do it right, you don't have to ask. How it is better?
1. it is the most ergonomic and efficient way to train legs
2. it has benefits also in your balance, lower back etc.
3. it is easy way to train legs and if you do it right, you get fast results.
So, now you sit there and wonder how to do it right? For start, take the barbell high on your shoulders and try which is most comfortable, narrow or wide grip for your hands. I prefer wide grip. Then you lift the barbell from the rack, take a back step, put your feet in the shoulder width apart, and squat. While squatting down you make sure that your knees point same direction as your toes. When your ass touch the ground, get back up for another rep. For weight, never use more than the weight with which you can make perfect and deep reps. For reps 10 to 15, no less. When you know how to do it, (means after few months of training how to really do this) ad weight and do 6 to 10 reps, but always use same range of motion. No matter how much weight you use, ROM is always same. Most common error in his exercise is use too much weight, and by that you can't go as deep as you should do to get benefit from the exercise. I see this every week, guys load barbell up to 600 lb and do "squats" with 2" ROM while yelling and screaming. Don't do that, do deep squats with reasonable weight, and you gain mass instead of stress.
Also balancing 3 or 4 hundred pounds across your shoulders has got to be good for developing upper body strength no?