How are men and women similar?!

Well, physiologically of course we're very similar. We all have a heart and two lungs and a stomach and a spleen, etc. :)

I think that's a tough one to answer because, in my experience, men and women are a lot more alike than people ever seem to give us credit for. We are all somewhat concerned about what other people think of us. We all often worry about "not being good enough" in a relationship (whatever that means). We all base a certain amount of our self-worth on whether our partners find us attractive and adequate.

Men and women are socially tuned to display these fears in different ways (e.g.: she's worried that if her butt gets too big he might bang his secretary, and he's worried that if she DOES bang her personal trainer, it's because HE wasn't good enough in bed), but they tend to come back to the same fear in the first place. It helps a lot if we can stop seeing our partners as an "other" that we couldn't ever hope to understand, and start thinking about (and empathizing with) our shared humanity.

If I had to make men and women MORE similar, I'd try to get women to be more cooperative, honest, and forgiving with their friends. Men will often work out problems with their friends and forgive past problems. Women tend to hold grudges longer and pretend that things are fine when they're not. I honestly think that men have learned to be less competitive and more cooperative with their friends. Truly loyal cooperation among women is rare.

On the other hand: I'd get men to worry a lot less about whether other people might think they're "gay" if they do something like learn to dance or buy a nice shirt. Women rarely worry about having their sexuality misjudged on something so trivial, and often aren't the least bit offended if somebody makes the wrong assumption. It's a non-issue with most women. However, if men were less fearful of this, then they would be more open to new experiences. :)