The world is full of difference. You need to be specific as to what you're asking about. Difference is all around us.
If I'm part of difference, I don't think it's logical that I can understand something I'm part of.
Sure you can. Are you white, black, asian, or native american? Is your background one culture or several cultures.
Are your parents from the same background? If not, what are they?
I'm Japanese American. I learned recently, that Japanese are really Korean. It's been proven by DNA. My father was born in Hawaii, and my mother was born in Portland, Oregon. Both are of Japanese ancestry.
Most of our children are married outside of our culture. Even my sister is now married to a Russian. We have German, Polynesian, Vietnamese, Chinese, Russian, and Black in our family. Probably more, because we've not kept in touch with our extended family.