YANBU.
I genuinely don't get it.
If your children decide themselves to make you a card, or buy you a present, or try and bring you breakfast in bed or something, that's lovely.
If your DH decides himself that it would be nice to buy you a treat or give you a rare lay in, that's lovely.
If you're on good terms with your mum or MIL, equally, buy them a card and a present because people like presents.
If it's a good excuse to organise a nice big family lunch, do that and have fun.
But expecting it? Sulking because someone didn't get you enough or do the right thing?
I've never understood why so many grown adults get so caught up on what is essentially a commercialised day and expect a certain level or gift or treat. Same with Valentine's Day too.
But then on the flipside, I do imagine a lot of women who get so caught up on the idea of getting a lay in, dinner cooked for them, a present etc possibly have problems within their relationship anyway because lay ins, dinner cooked never happens for them at all...