its all good- you are entitled to your opinion. i guess i’m approaching these things differently because my husband is not desi, so for him, valentine’s day is a big deal and a cultural milestone during the year. i always get flowers and a card. and its not that oh we’re celebrating because cupid says so- of course you can show your affection, and we do, any other day- but feb 14th is just a day set-aside to bring that into the spotlight. i don’t see anything wrong with that, personally.
to me, parenting seems like a big enough challenge as it is without being concerned about my kids exchanging cards at school or wearing red and green at christmas. i would hope that we would do a much better job of raising them and teaching them so that they don’t get sidetracked by these holidays and start to think they’re non-muslim or something because they participate. and i guess i’m even more laidback than the average poster here because my in-laws are not muslim. so christmas is as big a deal in their household as eid is in my family’s. and we do celebrate it with them- not in the spirit of christ’s birth- but more as an excuse to dress up and have a big special dinner together, like we do on eid in my family. its cultural more than religious and i don’t want to raise my children thinking their grandparents on dad’s side are “evil” because they party on december 25th lol 
if anything, i think its going to confuse the hell out of them and its not fair to the grandparents either to deprive them of the chance to share their culture with our kids. now having said that, of course certain things like pork and wine won’t be allowed and that’s where their muslim faith comes in.
so to me, its all about striking a balance.