I don't get disappointed. The best gift you can get me for my birthday is remove the obligation for me to get you one on yours. Saves so much mental energy and time.
After rationally agreeing not to get anything (because we were about to move overseas on a couple of luggages and didn't want extra stuff) my SO got me 3 (3!! usually it was one per event) gifts and I was empty handed.
And I had to resell / returns some of the items as we were moving anyway and we could just buy better quality stuff later on, without having to pay for the move.