23 years together. We often forget anniversaries. there have also been a few spectacular birthday fails along the way. I don't count those things.
We are happy together, like being together, enjoy each other's company, have a similar sense of humour, share the same values/goals, trust each other completely.
I will say that having children makes it very very hard. At the 12 year stage, we were both a bit exhausted, not a whole lot of money, constant on for the kids - made it hard to really connect. Now we have teens and we have more money and the hands on stuff is not that hard (now that I've discovered books on cd so the incessant driving isn't so bad) but the worries are bigger and all-consuming - still hard.
I really wouldn't judge the state of your relationship by acknowledging an anniversary. But if you are not talking ever, if you don't look forward to a half hour alone with him, etc then maybe try to start reconnecting if you can.
My advice on this is to start thinking positively about your partner wherever possible (as in say "please don't give coke to ds before bed, he goes loopy and I'll leave you to deal with it" but try not to think "you stupid fucker why are you deliberately giving sugar to our son just to make my life hard". There is a difference and at the stage of our marriage you are at now, adjusting this mindset helped me and dh enormously.
Also around the stage, I decided to prioritise sex. I figured it was the only thing that was exclusive to us so therefore it was important. I also felt very close to my partner for a good while after sex and he was the same so it was a pretty enjoyable way to create an intimacy. I'm not talking about twice a day here but more being open to the idea when it presented
All of this advice is based on the idea that you are married to a good decent man. If you are not, none of this applies.