Well, in order to know what life was like before YT, you would have to go back to 2005 from Jan 1st to Feb 13th. I did not even exist back in 2005, so life for people on Earth back then was pretty boring because nobody was able to see my beautiful face lol. No, but seriously, life before YouTube was pretty dull. However, before YT, there was such thing as Yahoo! Videos. But YouTube was something that changed videos online forever, and nothing could ever replace it.