I don"t appreciate the added bulky feeling of a case. Not for regular use anyway. I do use cases but relative to my use :
Armored cases for hiking/biking
Tech/smart cases for photography
However, I love my phone's signature style and design I rather keep it naked. Problem with this is you are prone to damaging the screen. I've had my 1k mistake spoil my day. A week ago I did it again. Lady was falling down the stairs and as I reacted to help catch her my phone flew out of my hand. When I recovered my phone, surprisingly it had little damage to only the screen protector itself. Totally proving it's worth this investment. Less than 50 bucks vs 500 replacement costs , it's a no brainer. Even with a couple of cracks on the screen protector, the display doesn't seem interrupted visually. And although you can feel the cracks, the touch sensetivity is unaffected. I'm ordering a two pack this time.
Have tried multiple cases and honestly it fits just about everything. The edges do seem to lose adhesion from corners but it's from snapping the cases on and off. Even those visible bubbles don't interfere with the display though.