It's interesting to think about all of the taboos and controversial topics from just my lifetime which have become not quite as contentious over the years. The debates aren't totally gone, and maybe they never will be, but mainstream opinions have shifted. There are so many issues I can remember people screaming at one another about on Oprah when I was a kid, for which we've wasted so much time and effort arguing over, that now seems silly. It might have been driven by the economic conditions of affording an apartment/house as much as it's changing social expectations, but I can remember as a child it still being a little scandalous for unmarried couples to live together.