It's been 17 months so I guess I still have some healing to do. - FeelingFree
I don't think you're lagging behind. We didn't do Christmas the first year we were out because we didn't want to feel we were swapping one lot of customs/beliefs for another lot.
But on the second Xmas when we had been out almost two years we did buy a tree and give each other cheap chocolate and second hand books because we didn't want to join in the ridiculous commercialisation.
Do it your way, whatever feels right. From then on we didn't get feelings of guilt about it so please don't worry that it takes decades, you're nearly there.