Does Valentine's day make Economy more efficient!

Valentines day creates market for flowers, chocolates and diamonds on a single day in the whole year instead of spreading it all over the year. Valentines day is nothing more than yet another commodity market, which works in much smaller time period. This should make the whole market more efficient, as tulip and rose farmers can grow more of them right before Feb.. Diamond merchants can spend most of their ad-spending right before valentine's day and so on.

I can't imagine how many roses and chocolates will go rotten if everyone celebrates their own day of expressing affection. Everyone is better off.. Well, except that people lose the surprise element.