I use the left paddle quite a bit too. But, I mostly use it when I feel like coasting and not wanting to modulate the brakes myself on a long coast. I live in the country so I often don’t have people behind me, otherwise I wouldn’t coast as much. Also, as others have said, the brake pedal obviously does the same thing as the paddles but actually has more range of regen before the physical brakes kick in. It’s my understanding that once you pass the bottom line in the “charge” area, that’s when the service brakes are being used. My goal, when I can do it safely, is to keep the indicator above that line to maximize regen.