I believe watching video game gameplay videos can be beneficial to all gamers whether you are a pro-level multiplayer gamer or a fan of "Reaction" horror video games of your favorite streamers.
Watching gameplay will give your time value and meaning by showing you walkthroughs, tips, hints and even professional in-game tactics for your favorite shooter.
The best website on the internet in my opinion for watching gameplay videos isn't youtube. It's a site called Jason's Video Games Source Your welcome.