The best reason to abolish it, in my opinion, is that everyone should deal with his time in the best way; there is no good reason why you should get half a minute extra with each move, except that it's a bit easier for the arbiter.
Jan TimmanWhen you're good at something, you should continue to do it. Too many players have stopped at a relatively young age.
Jan TimmanHalf the variations which are calculated in a tournament game turn out to be completely superfluous. Unfortunately, no one knows in advance which half
Jan Timman