Ahh, yes there is. I owned a school bus for a year and a half, and spent waaaay too much time improving it. Installing speakers, 120 V power, etc. It was fun, but definitely a waste. I was pretty unhappy at the time, and it was sort of a therapeutic project.

I'm not trying to say that we don't all have our vices, or that it's terrible if we concentrate inwardly on ourselves from time to time. I just don't like to see that behavior justified or elevated.