Should they celebrate your milestone anniversaries? Sure, that would be nice. Will they? Not always, especially boys. I agree with everyone else that you are better off resetting your expectations of your adult sons and being presently surprised when they do follow through as you would like. There are many other measures of "good people"; I think you'll feel better if you focus on their positives.

cj/

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I was walking home one night and a guy hammering on a roof called me a paranoid little weirdo. In morse code. -Emo Phillips