Every year my MIL has a tantrum over lack of anniversary cards. FIL always gives her one plus a gift but I must admit that we (DH and I) frequently forget. My parents don't bother much with theirs (they exchange cards but don't expect others to send them). We have celebrated/marked the big ones with both sets of parents.
I dont understand why it bothers her so much. We weren't alive when they got married. DH and I gave been married 20 years and only receive cards off eachother and MIL.
Should I make more of an effort to remember or ISBU?