Anniversary drama

Would you be upset or at least kinda bummed if you and your s/o didn’t celebrate anniversaries? Me and mine don’t really even know what our anniversary is, but we’ve been dating for over a year. I suggested maybe we just kinda celebrate our one year late and then try to guess what our actual anniversary is for the future. I don’t know if I’m just too emotional or sentimental about it but I’ve never been in a long term relationship like this and I think it’s important to celebrate our relationship. I’ve never had an anniversary with someone so it does bum me out that it doesn’t seem like he cares. Thoughts? Your experiences? We’re both 20 in college by the way.