Dividing Generation is ridiculous

My first dtube video, I tried youtube but I did not get much recognition. there are no exact date and year when generation begins and ends. Certain parts of the world has different social Generation system like Korea, China, Japan. Some experts believe Baby boomers start in 1961, 1964. Some experts believe generation X are at 1961-1980, 1964-1980, 1964-1979, 1964-1981, 1961-1977, etc. Some experts believes millennials begins as early as 1977 or as late as 1985. Some experts believes that millennials ends in 1995, 1996, 1997, 2000, 2001, 2004 etc. Generation Z are hard to describe.