Sounds to me like you're just careful with your stuff, which is the best protection there is.
No, I don't agree that an edge screen is "harder to protect".
To me this is like saying the bumper of my current car is harder to protect than my last car. Well, no, not really. No matter what I'm driving- I'm NOT prone to wreck it! I don't drive any car any differently based on some notion of what car is more or less crash-able than another.
Likewise, I wouldn't look at a non-edge phone and think, "Oh, this is easier to protect from damage." No it isn't. Don't be careless with it, PERIOD.
I kinda saddens me to know that people will take an awesome phone like the Note 8- and stick it inside some cheap plasti-crap ToddlerBox thing. Such a waste of a sleek device, IMO.
Save whatever amount a ToddlerBox costs and put that into INSURING the phone.
In two years when you sell the phone I almost guarantee someone who takes care of their device won't have to reduce the price for minor wear that's anywhere close to paying x amount for ToddlerBox/ screen protector nonsense. AND the added bonus that the whole time you had the phone, it didn't look like crap.