Two things

Today I messed up a little at work. Nothing serious and it wasn't fully my fault, but it doesn't feel good to have a client be upset at you and thus have a bad impression of your brand as a whole. I know you can't please everyone, and I know mistakes happen, but I feel responsible. I will always remember that this particular person now probably doesn't have a high opinion of the company in part because of me.

Kids. I will not have kids in the future. I might make a concession if whoever my wife will be (assume I get married heh) is willing to be a stay home mom. Otherwise no. The world is far too scary a place.