Maturity: get it done, no whining

Are you mature enough to pass the light bulb test?

I'd been sharing my mid-20s with an educated, sane man for more than two years when he remarked in his cheerful British accent how amazed he was that given all the time we'd been in our apartment, not one light bulb had ever stopped working.

I looked up from the pile of papers I was grading to double-check if he was not kidding. He wasn't.