: I agree with Peregrine981. The primary problem with your arguments is that they are based on original research/observations. Right now, there's nothing substantial or supportive enough to justify an early 90's start date for Generation Z.  

 : I'm confused as to what you are saying - some of your statements seem to indicate large changes have occurred (Disney programming, fashion, music, rap, emo music) but at the same time you are saying not much has changed since 1991 (casual clothing, rap, imported goods).  

 : While your points are food for thought and base themselves on times changing, some of the changes you mentioned can happen every few years or aren't really drastic. Fashion is ever changing - the whale tail you mentioned was around for about 5 or 6 years before it got old while other trends can last anything from a season to a few years. Clean cut, "classic" fashion is ever present - any generation can encompass a number of fashion trends. Disney stars have been worshipped since Hayley Mills in the 60's. The 1989-1995 Mickey Mouse Club was a popular program, launching the careers of former Disney stars like Britney Spears and Christina Aguilera. Original Disney programming has been present since 1983 (see http://en.wikipedia.org/wiki/List_of_Disney_Channel_series#Disney_Channel_series ) and Gen Y also grew up with NSYNC, Britney Spears, and the Backstreet Boys. In addition, somebody born in 1988 is not likely to remember life before the collapse of the Soviet Union, being only 2 -3 years old at the time and multicultural awareness in schools has existed before the 1990's (see http://www.edchange.org/multicultural/papers/edchange_history.html for brief timeline on multicultural education history). I'm not sure how these arguments position a person born in 1990 in a different generation than somebody born in the 1980's. 

 : It's fine if you relate better to a person born in 1997 than to one born in 1987 - how you feel is totally fair. However, as Peregrine981 stated, you would need to find valid sources to support your argument to include them in the Wikipedia page )