+X items aren't there just for the fiddly bits. They're not just feats or bumping stats. +X items are in D&D for nostalgia/sacred cows. The designers themselves said "We had to keep in +1 swords, because everyone understands what a +1 sword means". Other RPGs don't have the +X items in them, so it's a concept only to D&D.
It's not just fantasy literature to me. +X items are boring. I am aware that people like to increase their stats - I like to increase my stats - but, that's not what magic is, to me. Magic isn't "Now I have a +5% chance of hitting something".
And, one doesn't even need to fiddle with monsters - just give a +X in their math at the levels that players are expected to get the +X. Level 1: +1. Level 6: +2 to Attack/Defenses.
Mearls suggested this if you wanted "Low magic" games.