Your sentiments are nice but let's not forget that mother's day is ultimately just a cynical marketing exercise by retailers.
The concept was originally dreamed up by a greeting card manufacturer to flog more cards. Now it's just another opportunity to flog everything from flowers to slippers to skateboard lessons.
You are being manipulated by the dark forces of capitalism...BEWARE
Or if you prefer the feminist take ... mother's day is an attempt to keep women in a state of subjection by glorifying their role as domestic slaves and an attractive packaging for a womb.
You are being manipulated by the dark forces of patriarchal oppression .... BEWARE
(OK, go ahead and tell your mum ya love her. But don't accept things on face value)

PS: Yes, I have accepted my "world's best mum" mug without complaint....