The only thing I am surprised at is how many people are into all the technical geographical/economic/political implications of fictional highways. I thought roadgeeks would mainly be obsessed with the grid and building new highways than how feasible it would be. Even on suggestions just involving redesignations, I never expected people to start responding with how it would cost $100,000 in signage..etc. But in general you guys are cool, and the mods seem much more engaged than on other social media where they just delete/lock stuff they don't agree with and you don't even know why or who..etc. Also, given how the intro board is like "don't let on how crazy we are" I figured there were many more grid fanatics like me LOL
Speaking for myself at least, but I believe others feel similarly...
When I was younger (well before my days on this forum), yes it was absolutely fun to doodle roadways, plan out fictional interstates, renumber things for the sake of the grid, imagine way-overdesigned interchanges. etc. But as I got older, studied civil engineering in college, and now work in transportation engineering, I found I just didn't get any enjoyment out of those sorts of things anymore because I now knew how the process works and just how expensive such projects can be, the work that goes into simply securing the funding, the lawsuits & debates over environmental implications, etc.
With that said, the fictional thread generally serves its purpose well and I can still occasionally have fun reading some of the semi-realistic stuff there. But it's also easy to ignore when I'm not in a fictional mood, which is most of the time.