I use YouTube for like more than two years. What ever I want to learn or get information, instructions or such things I use YouTube.
YouTube has most of the videos related to my doubts or something I have to learn more about. Im now learning programming languages through YouTube and its helping me a lot.
Entertainment is at its best. I watch daily vlogs of few Youtubers and its a great time pass. And the troll channels make it more entertaining.
Its very much user friendly, you get very easily addicted to its features or its interface.
Its very much useful for me. And I am very much liked by it.