Thought I'd throw my 2 cents in; I've run a Discord community for survivalist gamers (Minecraft, 7D2D, etc) for a few years. Our servers are always heavily modded, and especially in the Minecraft community, modding is extremely prevalent.
That said, if it's beyond browsing for a Modpack on the Twitch client, hitting install, and logging in ... we know we're going to have issues. Tasks like getting an older version of the modpack, or retrieving a specific version of an extra plugin and dropping it in your mod directory, that modders might consider simple, either confuse people, or they don't want to bother. Never mind debugging a problematic modding issue.
Projects like the 7D2D Mod Loader have made modding exponentially easier, but to the AVERAGE gamer, it's still an arcane and problematic process. I have a friend who has played 7D2D since A15, is computer literate, and had never used mods: felt it was too difficult, didn't know how to do it, and just didn't have the interest, I guess, to learn. I showed him the Mod Launcher, and now he only plays modded.
This is obviously my opinion, but I thought it might be an interesting viewpoint to throw in.
This isn't a knock on people who don't use mods: I mod because I enjoy it; you do what makes the game enjoyable to YOU.
PS: Posted a modified version of the poll on my Discord this morning (just said "any game") and everyone was like "MODS FOR LIFE! FREEDOM!" *facepalm*
...going to steal this from a comedian...
Bill Burr is a madman