You're the same age as me OP, born in 87 and I agree it's all got too much nowadays. I actively reject all of the extra nonsense and stick to what we enjoy about Christmas which is the food, the lights and spending time together.
I completely love Christmas and don't find it at all stressful but I think it's because we keep it simple and very similar to the sort of Christmases I had growing. So no Christmas Eve boxes, North Pole breakfasts or Elf on the Shelf. No matching family pyjama sets.....they do mostly seem to be purchased for the Instagram photos if I'm being brutally honest.
We have a tree that's a complete mishmash of decorations from grandparents that have now died, things DDs made at nursery and baubles collected on our travels. There is no colour scheme whatsoever and I love it. We wrap the bannister in tinsel and DD2 (aged 6) asked for "that fluffy, sparkly thing on the stairs" again only the other day. We string fairy lights up both inside and outside the house because I love them.
We stick to a few presents each and a Christmas Dinner mostly bought pre prepared and ready to put in the oven so I can spend Christmas Day drinking Bucks Fizz and playing with DDs. I refuse to get into debt for Christmas so no spending hundreds of pounds on presents.
Everyone comes round to ours for a buffet on Boxing Day but it's no stress because I just cook a big gammon and serve it with bread rolls, a salad and a cheeseboard. Trifle and Christmas cake for dessert as they can both be made in advance.
We go to the panto because we all love it and it's our tradition but other than that no big days out. There is a light trail near us that would cost us over £100 for a family of four which is utter madness. I just refuse to spend that sort of money.
We play games, watch films, see loved ones, eat, drink and be merry. You really don't need any more than that.