One of the other questions I am sometimes asked is, "What's it like living with a baby, considering you have no children of your own?"
First off, let me just encourage you to look at this face, and tell me what could be bad about living with this beautiful treasure. I challenge you to think of something, anything, that would not be outweighed by the fabulous joy of witnessing and participating in her daily growth.
Logistically, one thing that is different about living with a baby is that sometimes the parent(s) will ask for occasional babysitting. This has worked fine for us, because we're glad to do it when we can, and when we can't, she's fine with us saying no. I'm sure discipline will become a more complex issue, but right now we're just collectively trying to keep her little fingers out of light sockets and such.
An amazing scene involving her struggle to do right: This house has a central vacuum, which means there are outlets on a few walls with a cover that pulls back to reveal the hole where the vacuum tube attaches. It's about 1.5 inches across, and it's kind of dusty, so we discourage her from pulling back the cover. It's right at eye level, though, so it's a big temptation for her. The other day, she was standing a couple feet from the outlet, staring intently at it...reaching for it...and saying, "Don't, don't." Then she turned and looked at Andrea, her mom, and started inching toward it, still saying, "Don't, don't." I felt a mixture of amusement and, well, sadness for her. Not even a year old, and already feeling the pull between obedience and disobedience.
Fortunately, as soon as Andrea said, "Yes, don't," that was enough for her and she walked away. :) She's such a little joy! I know it'll get tougher to convince her to obey, but we're just relishing every moment on this crazy ride.