How is ProtonMail better than Gmail in your opinion? I use ProtonMail but find the UI meh, the spam filter worse, and the calendar bad (not to mention it's cost

How is ProtonMail better than Gmail in your opinion? I use ProtonMail but find the UI meh, the spam filter worse, and the calendar bad (not to mention it's costing me $). I like the privacy aspect of course, which is what drew me to it in the first place.