Open World Games with No Side Quests

I hate open world games because they are almost all side quest focused, with the main campaign often either being an afterthought, or a single quest chain you can finish in 6 hours, with 94 hours of busy work. I respect you if you feel differently but to me, side quests feel like work. I would love an open world game that allows you to take in the vastness but be 100% focused on a 25ish or so hour campaign, but I don't think something like that exists.

100+ hours of content is not a selling point to me, it is a deterrent. It honestly makes me wonder what these big studios are thinking, considering Millennials are allegedly the most heavily targeted age group for video games. Don't these companies realize we all work 50+ hours a week and have families?

And while we are at it, yes I am aware that I don't have to do side quests, but again, that is where the devs focus their efforts on. I'm not dropping $60 on an open world game with a half-assed campaign you can blow through in two sittings. I was under the impression Death Stranding would be what I was looking for, but apparently that has side quests too (haven't played it).