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Thx That`s what i wanted to understand. 
Looks like that this is a world trend - people become more practical, strategies becomes more defensive. In such a way bluff percentage decreases and pocket cards becomes the one of most important thing in the game. Bluff ceases to be the decisive tool, it just helps sometimes.Well, it's still poker, so you can't win without bluffing occasionally, but you are right, good players are doing it less often these days.
~ Poker is like chess, it's a mind game and the smart one will always win.
I don't think poker is like chess. They are very different games, actually. Just read our discussion with @mak013 above, and then come back here.
But if you don't have time for that, I'll tell you this: chess is a game of complete information, meaning that luck plays zero part in it. It is determined how to play in this or that situation, you just have to know it. Memorize all the games played during the past 100 years by the best chess players, and you are guaranteed to win most of the time. But you can't do that trick with poker.