Some say we are all the same but we are very different, no?

Well, one example is the difference between men and women. Studies have been done on days-old babies, showing that male babies prefer objects; and, female babies prefer faces.

So, there's one innate difference, which isn't the result of social influence.

But sure. Of course we're different. When people say "we're all the same," it's just a general statement meant to convey "we're all the same species, so we should be on the same side," I think.

Life would be really boring if we were all the same 😛

You know whats kind of cool. We still have a tribe/crew mentality. We only associate with those that we choose to associate with. Although we can still live in harmony despite our differences. Just cuz me and Tina don't like each other it don't mean we can't both work at the same McDonalds.

We are all different but alike.