Friendship is forever

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I think that's awesome. Especially since it's a puzzle game, getting your time down is definitely a matter of practice and skill.

Im not saying I played the game for 280 hours, but there's lots of stuff you can do. you can make the stages harder to actually challenge yourself, there's co-op if your playing the 2nd one, and there's all the achievments you can try to earn. there's waay more than 5-7 hours worth of gameplay for both Portal and Portal 2. So although I don't completely disagree with you, there is a lot more to it than you think.