Old, Responsible (mostly), and a Little Ticked Off

When did I get so old that I now get exceedingly frustrated with consistent irresponsibility? Was it yesterday? Was it when I started dating Andrew? I dunno when it happened, but it did. Consequently, the lack of responsibility some of my classmates exhibited during a recent project - which, btw, is now on a different time schedule to accomodate the slackers - ticked me off.