Funny thing about holidays-- with one or two exceptions (New Year's Eve and Labor Day), every holiday marked on the annual calendar cycle is celebrated incorrectly by people in relation to the holiday's original intent. From St. Patrick's Day to Fourth of July to Christmas-- all religious or political meaning is purposely drained and replaced by consumerism and/or consumption.
Think about how holidays are celebrated today: St. Patrick's day becoming nothing more than an opportunity to drink green beer and for everyone of every race, religion and ethnicity to Pretend they're "Irish" while wearing green clothing. Fourth of July is an excuse for a 3-day weekend to go to the beach, BBQ, drink and watch NASCAR. And we know how bastardized Christmas has become over the last 50-60 years since it was first discovered how vital people buying presents for one another was to the economy.
Valentine's Day is no different. Of course its lovely that a day is set aside for courtship and outward proclamations of love to those we care about. It is fair to say however that if people demonstrated this on a consistent basis to their sweeties who mean the world to them, there wouldn't be the need to apologize for a calendar year of neglect with one grandiose day to make amends.
Many think Valentine's Day is a secular holiday. It is not and not meant to be celebrated as such. So here's a brief history lesson: