Why does everyone keep giving people strategy advice?

[MNpoker]

Obviously this is pulled from the other thread on 'Softest games' but I thought I'd see what the arguments were for this one.
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Why do people insist on coming onto the boards, and telling everyone about what what they did right or wrong in certain hands? Doesn't anyone realize that helping other players get better is not the optimal way to keep soft games going?

From now on, can everyone just say FOLD whenever someone asks what they should do in a hand, and not run their mouths every time someone needs help fixing a leak in their game? The person giving advice to a weaker player is really only hurting themself by doing it, anyway...