I played 5e for a good 5 or 6 years, it's good for what it is: a basic, "beginner's" DnD edition for chill, simple games. It breaks down when players try to do any kind of optimization or "character-building". Nowadays when I run 5e, I ban multiclassing, custom backgrounds, feats, and exotic races. If you want that kind of game, I'll bring out the 3.5e books. If we're playing 5e, we're playing to 5e's strengths as a system.

For the last 3 years I've run games on a DnD 3.5e West Marches server (link in bio).