Intended or not, I've found playing with mods way, way more fun (and much less annoying) than playing vanilla Factorio (which I still love, but not nearly as much as modded Factorio).
After my first vanilla playthrough I loved the game, but found a bunch of things annoying or which I thought could be improved on. Soon after I found there were mods to satisfy every one of my wants and cure every one of the annoyances. I've played with mods ever since and love it.
Want longer reach? There are mods for that.
Want faster travel? There are mods for that.
Want more variety in vehicles? There are mods for that.
Want smarter/tougher/different enemies? There are mods for that.
Want a complete overhaul of how the game plays? There are a bunch mods for that.
...and thousands of other mods beyond these.
You're really missing out by avoiding mods.