Dear Emm I'm probably going to be one of very few who thinks, commercialism or not, it's a day when children can make their mum feel special. Nothing wrong with that.
As you say, your son has always tended to be rather thoughtless and has got away with it!
Two stories. My BFF also happens to be my hairdresser & I was in the salon a few days after Mother's Day (UK). In strolls her son with the belated Mother's Day card, he lived close to the salon.
She'd already said to me "hmmmm no card from DS" & was feeling sad.
As he handed card over, I turned round & said "no point now, Mother's Day was 4 days ago .... Mothering Sunday".
He didn't flicker an eye lid & just confirmed that he was one spoilt self centred man!
With my own son, many years ago when he was about 16-17 still at school but with an amazing well paid Saturday/evening job, Christmas came along and not one single pressie had he bought for me, his dad, his twin sister, his grandparents etc.
Didn't say a word to him about it but on Boxing Day my exact words were:
"Why do you think you're exempt from showing love and gratitude to your family. It comes around only once a year so there's plenty of time to save a little in time to buy a small gift for those you love".
Well, it never happened again and he does in fact spend way too much on us all and actually is great at choosing exactly what you want, be it cheap or expensive.
He just needed telling!!!
My mother was with us until she was 96 and I can honestly say Mother's Day was aimed at her right to the end. Then it was my turn! So to those who give your son an excuse because he has a new baby, I say "so what". You can have dozens of babies but you only ever have ONE MOTHER!
I'm sorry you're feeling sad and upset ..... But I would be too!
Here's some ? and a virtual hug ?