YouTube can be officially called as the universal tube site. It has everything from movies, TV shows, news, documentaries, gags, fitness videos, sports, seminars, radio shows and what makes YouTube special compared to other tube sites is the huge availability of user driven content which is updated regularly along with study materials, health, religion, exercise, political view points.
For me the greatest thing about YouTube is the user driven content along with the affiliate program of YouTube by which it monetarily compensates content providers this has led to billions of high quality videos with a common man's perspective. Since there is no official moderation on YouTube trolls can run amok, a person can call for death of a person or spread lies about a person but nothing will happen.
Videos are of a pretty high quality quality goes up 240p to 4k quality. you can subscribe to individual channels to follow the activities of a particular channel. You can comment on videos, you can reply with the help of videos etc. You use videos to review a product, or use as a dairy or use as a rant outlet whatever you do YouTube has been part of our lives. If you have a good Internet connection YouTube is better than most television dribble. I highly recommend YouTube any day of the week.
