Sure, a great 6-10 hour game is worth the price of admission. But a great 40 hour game is better. But you don't want a button masher game to be 40 hours, so if you're a button masher game fan then 6-10 hour games are what you should expect.
I would prefer something like Uncharted to be double the length (but not 40 hours), but realistically the story and [effectively] the on-rails style makes it impossible to get game legth beyond that 10 hour limit.
Fortunately for me I'm quite a slow gamer, so if people say a game is 6-10 hours, my first play through will be more like 15 hours. My second play through (if I do it) will be closer to the 6-10 hour mark.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
