I haven't spent a v-day with my DH since we were in high school lol I did get him a web cam so we can...umm...talk
When you are married or with a partner for a long time it can get pretty monotonous with life getting in the way (kids, work, school, etc) & romance getting to be where it is pretty much non-existent. I think of this day as a gentle nudge to pay a little more attention to your relationship instead of taking it for granted.
As for the singles...I promote it as a day to love yourself

Who says it needs to be a holiday for couples??