Ok. I have three old school friends. We live reasonably close to each other and we see each other about once every 2-3 months. Our husbands are friends, two of them are old school friends.
Dh and I are probably a little distanced from the group. Tbh we probably have fewer things in common with them and over the years have made friends with other groups. I personally have always felt a little suffocated by the group and going back a long way to school I remember pissing them off a bit when I got close to other friends 
Anyway, fast forward many many years and we have a situation whereby we still buy each other Xmas and birthday presents. I don't mind the Christmas thing as we get together for a meal once a year and it's all part of that but the birthday presents thing is all a bit half hearted, fiddly to organise because it tends to be a case of taking turns to buy a big present then chase others for money, and finally... Bloody expensive! Especially for me as all the girls birthdays are just after Christmas.
We have out fortieths next year and i know, because the others will probably decide this and I will have to go along with it, that a lot of money and ceremony will be spent in all this.
Would I be unreasonable therefore to cut my losses now, with my 39th b'day coming up, and suggest no presents from now on for me? Obvs they can do what they want together... Any suggestions on how to play this?
Sorry, first world problems and all that I know this sounds ridiculously petty and quite possibly school girl too...