OK, I'm a guy but I celebrate Mother's Day. I've been called one more than once in my life.
Seriously, my mother died quite a few years ago. We still have my wife's 98-year old mother but she is having all kinds of health problems at the moment. So, all in all, it wasn't really a happy, happy day.
To add insult to injury, our kids are in the UK and they celebrated Mother's Day back in March. For me and my wife, Mother's Day here was pretty much a non-event. Now I fell saddened and depressed.