I've had an ideal childhood, and loving parents. I was talking with someone who hadn't been as fortunate recently, and I think I shocked him slightly.
See, we had similar interests, beliefs and attitudes towards life. He found it impossible to comprehend that two people with such contrasting backgrounds could turn out sharing so much in common. There's no detracting from the harmful effects of abuse but - jiggy - it isn't the be all and end all of what makes us 'us.'
Look around you - read the posts. Learn.