I think there's always one partner that gives more than the other. . . my husband is a nice guy. . . we've been together 20 years, but I give him gifts for occasions and no reason much more then he does. His excuse is that he cannot please me. . . . and I can go get whatever I want. Now . . we both know that it doesn't mean the same thing. However, I have had to get use to this over the years. It may be that her side of the family never exchanged gifts that much. I'm almost certain that my husband's side of the family was that way. I agree with the other post, that you should sit down and have a conversation with your wife. She needs to know how important this is to you. It may not change anything. . . BUT IT MAY. You deserve to have your feelings known.
Best Wishes. . . Hayseed