I haven't spent a Valentine's Day with a significant other in... my entire life. It honestly doesn't bother me. It's a holiday like a bunch of others and a lot of them i don't partake in either.
Here's a list of holidays that i don't celebrate or see no point in for myself that i'd make a thread to complain about if i cared:
Presidents Day, Groundhog Day, Martin Luther King Day, Passover, Earth Day, Arbor Day, Cinco de Mayo, Yom Kippur, Veterans Day, Hanukkah (i mean for fuck's sake i couldn't even spell it three times just now!), Kwanzaa... etc
Sure, couples don't need a specific day, but it's nice. It's even nice to witness unless you are that lonely or bitter.
Can you honestly tell me that things like Christmas and Easter have a real purpose behind them anymore? They definitely don't for me and have dwindled into consumer holidays where you typically spend them with family. I could get into an entire rant, but i'll stop there for now.