Fomo

Fear of missing out is a fear of not using one's time in the best way. It's the fear of missing great events, and new updates. 
E.g. I didn't play video games for years, I didn't play Skyrim until 7 years after launch. By the time I played it the graphics were already outdated, and most of the game (except the environment) was as dull as a blunt weapon. I ignored my FOMO while Skyrim was fresh, and it resulted in me missing out on one of the biggest fantasy world experiences of the 21st Century even more than 10 years later.