The difficulty with 5e DCs is that there is such a wide disparity in bonuses from the Expertise Rogue to the ability-dumping non-proficient fighter, there is simpy not a DC that is interesting for both ends of the spectrum to roll. It's either "Why bother, I succeed even on a 1" (unless your DM plays as 1 auto-fails... ugh) or "Why bother, I can't succeed" (unless your DM plays as 20 is auto-success... ugh).Doesnt help that the DC system is pretty arbitrary at best. I still have trouble picking a DCm while improvising.
That's why when I DM a lot of DCs tend to be around 15, and a lot of things you're not going to have to roll unless there's a meaningful reason to do so.
Big beefy barbarian wants to smash a door down? Sure thing, no check.
Same guy wants to do the same thing but in one hit so the party can get the drop on the enemies on the other side? Now we've got a reason to roll!