It first starts out when your parents marry and then decide to have children.  After that, thoughts might cross their minds about things like if they really like their partner or their ethnicities/races.  In your own home, for me or my generation at least, you feel like you're being good and doing your parents a favor if you see them a lot, like me after 18 or 21 or so.  I've been stuck awhile trying to get out, and I feel now that I'm discriminated against, like it's the last straw.  Out of nowhere, people are picky about me and resorted to racism.  They didn't leave me alone, though, in doing so.