Could we please retire this phrase? And it's variant "that's the way I was brought up"?
All this really means is "I don't have to take responsibility for my opinions or actions. It's all my parents' doing. Therefore, you cannot challenge me on it. I couldn't be bothered to examine whether this opinion/action/personal hygiene method was proper, ethical or legal on my own."
Some of us were "raised" by good people. Some of us were raised by assholes. Some of us were raised by good people who just weren't all that smart. Or maybe were a bit behind the times.
Please feel free to give your parents whatever credit they have coming. But no matter who you were raised by or how, please take responsibility for your own views and modus vivendi. If you can't do that, you shouldn't be taken seriously.