When did I grow up?

I don't know when the reality of society settled up on me, but I can't read a book, watch TV or do much of anything else without too much thinking.

For example:

1. I was reading a book this week in which the title character received as a gift a $14 million New York condo as a present. Instead of thinking how awesome that would be, I thought, "she doesn't realize how much in taxes that will cost."
2. I find more pleasure in listening to NPR than to anything else on the radio.
3. I was reading another book in which the heroine decided to quit her job and move to Paris. All I could think was, "what is she going to do without health insurance?"

I'm so not fun anymore.