Also, more practically, I will never had another car without ceramic tint on every piece of glass. True, it doesn’t have to be super dark to work, but even mildly dark reduces driver eye fatigue and makes daytime road trips a little more pleasant.
Specifically, I have sensitive eyes and ALWAYS need sunglasses outside during the day. With my previous 20%/50% setup, I never needed sunglasses in the car. Now, with 35% on the sides and 70% on the windshield, I still find myself reaching for sunglasses about half the time. It is significantly better than before from both heat and eye strain, but tint does have a lot of practical value for me.
Plus, it does keep the car a lot cooler, and doesn’t require nearly as much work from the AC to get the cabin nice before I enter.