Blitzing in rapid time control

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Avatar of Raymaster64

I play a lot of rapid chess, and I keep running into players who pretty much blitz out all of their moves. For example, I'll be on move 20, and my opponent's clock has gone up to 16:25 or something. Why would someone move so fast in a 15/10 time control? Why not just play blitz if you want to play that fast? 

Avatar of manekapa
Saving an extra minute and a half at the beginning of a 15 minute game can be very beneficial for later time pressure or a critical move.

It can also be psychologically intimidating.