I think it's more than ok to reevaluate where your finances stand as far as giving, especially when not reciprocated year after year at least with some form of gratitude. I mean if someone has fallen onto hard times I wouldn't hold it against them in such a way.
One thing I enjoy is giving trees when I can. That's when aside from age and gender and perhaps even a small wishlist item, a card can be pulled and wrapped and returned with just that tag of paper.
I don't fully monitor cards, per se, but may cut back after enough time passes, but for the most part it's mutual with my list that I exchange with.