I do sometimes get upset when my husband forgot stuff like this. We've been together for 10 years, married for 6. Through these years, the number of times he's forgotten anniversaries, mother's days, my birthday, etc is... sad. I used to make an effort, trying to "lead by example" as it were. I used to secretly organise trips, meals, date nights, etc, but it never felt appreciated, and it was almost never reciprocated. Eventually, I grew resentful of him. He blames his ADHD for each and every one of his shortcomings, which I find cowardly. I understand some things might be a result of having ADHD, but nothing is EVER his fault. Forgetting important dates is one of them. Nowadays, I simply don't plan anything. If he brings it up, I'll remind him that the last time he did anything for me was 8 years ago.

I love him, but this hurts. I work a full time job, a part time job, take care of two kids and a house, and all I wanted for mother's day was a hug, a kiss, a thank you. I got fuck all. You are not the asshole OP. Speak to your wife.