My parents almost always had them when I was a kid so I grew up with it just feeling normal to go and collect eggs and have them wandering around the backyard.  On my own now, I live in a city where I wasn't aware of anyone keeping them so thought it was illegal.  Last summer I read the book, "In Defense of Food" by Michael Pollan, and reading about the nutrition in free-range eggs compared to store-bought, I thought it such a pity that I didn't have a choice.  I decided to check out the city ordinances just to make sure and found that lo and behold, we ARE allowed to keep them here.  Just because no one does, doesn't mean we can't!  So I immediately obtained a coop and some chicks and as of two days after Christmas, we are now getting eggs!