Does the concept of satisfaction exist?Yes. Unless one feels one will be satisfied with getting a particular thing, say a Mercedes Benz car, or a person, say Paris Hilton, one will not be motivated to act to get it. And there are so many other adventure crazy guys who want to travel for ever, taste different foods, encounter different cultures, etc., to be satisfied. So, the concept of satisfaction exists. Whether that satisfaction remains permanent is another matter. Mostly, when one is satisfied with something, one goes after another. That particularly applies to men who by nature have multiple ambition.
When you set on a path of being satisfied , its like filling a cup which has no bottom. There is too much to eat, too much to see, to much to learn and too much to understand in this world. The concept of infinity wouldnt let us cover the each and everything of our universe, and there will be always a scope for something "more".
1. even lord buddha wasnt satisfied for he carried on his life looking for peace and knowledge. even when you would gain one, you wouldnt want to lose it or get deprived of it. Even in satisfaction there is always a fear which doesnt let you be satisfied completely