Calm down a little. Think of how much worse it could be: Valentine's Day (or V.D., as I like to put it) could be a national holiday, with a day off. THAT would be insulting. As it is, it's really no worse than a couple celebrating their anniversary. Remember, noone's forcing you to comply, or feel happy, and eveyone else has a right to express their joy that they have encountered love.
When one of these encumbered people corners you and gushes mushy stuff, just smile, nod, and back away slowly.
