I definitely remember that line in the sand. It's pretty much impossible to to bring both sides together. I was a diehard fantasy player had High Elf ,Ork, goblin, Tzeentch, empire, dwarf, , skaven armies, huge into the lore and fluff. Played for 11 years, fantasy/40k 3x a week at GW, tournaments with an incredible group whenever they were on within 400 mile radius. Insane and definitely fun.
I pretty much became a solitary player with AoS and engaged online at TGA and home. I think I liked the freedom it gave to the whole hobby. It will probably continue that way as well.