I used to do no case for a long time, but motorcycling, wrenching, and skiing require cases and phones. In many cases a phone is a safety critical object, and in many activities it's an essential source of information. If you're a key figure for a company or a family it's your responsibility to be reliably reachable.
I think Quad Lock is the best case I've found due to it's supplemental utility.
I generally have the case, but when I'm more irresponsible I'll sitck the Universal Adapter on the back. I trust the adhesives.
Half of the time my ipad mini has a quad lock case as well. Bringing magsafe to my iPad. This is mostly an experiment to see how it feels to have a massive screen in the context of adventure biking or my truck.
Both motorcycles have wireless charging heads which is kinda essential for rain based nav on long trips. Although my current setup has skill issues which make it unreliable. This will be fixed and documented soon.
The arm band is nice for running and working around the house.
I am experimenting with the tripod adapter for a B cam.
Also the ring for maybe the most secure way to caribiner a phone to something (tbd) and it's kinda nice to have a 0 cost kick stand and more secure grip on the phone. I just wonder if it's a good way to break or injure a fingure. I also don't want to deal with it whne I need it off (like when I'm in motorcycle gear).