No one should be forced to become a computer programmer just to satisfy some notion that companies should be 50% men and 50% women. No one should be forced to become a nurse just to satisfy some other notion that there should be equal numbers of men and women in nursing.

It's also not wrong to say 'maybe we should try to make our company more representative of society'.

>> But if the difference is due to expressed preference, its fine and we should all chill out.

The problem is that systemic prejudice causes long-term harm to human society. Women whom make less simply because of their gender have access to fewer opportunities. So do their children. They retire with less. It goes on and on...

For many people this issue isn't something that can be summed up as simply as perhaps you would like. It has real, long term consequences.