>>11
No.. Actually, the problem starts much earlier than middle school, but never ceases to be reinforced.

>>4 Females and men are just as much ruled by their emotions, they've just been taught to play by different rules and display their emotions differently. Naturally, females and men are not identical, otherwise we'd be bisexual (in the biological sense of the word) beings. However, the actual gender-induced differences are minimal and it's mainly socially and culturally imposed behavior.

Usually, when someone whines and bitches about that all women or men are alike, the grave mistake the person is doing is to assume that they themselves (or just the good sides within themselves) are the norm and thus can serve as representative for their own gender, and lump millions, or even billions of radically different people into a single entity. That doesn't really work unless you make ridiculously simplyfied generalizations, like "humans breathe air" or "they're mammals".
Even "women have boobies" is only a generalization and not a rule. There are women who are flatchested, there are women who no longer have breast since cancer, etc. The ones who do not fit a generalization must by no means be in a vast miniority, there are often times when a generalization only actually holds true to the largest miniority within the artificial group (if at all to any of the larger miniorities at all).