Joke: Improved beyond all expectations

The other day at work I ran into Bob. We chatted over lunch and he dropped a
bombsell on me. "Rodney," he said, "Becky and I are going to get a divorce."

I was stunned. "Why? What happened? You two seem so happy together."

"Well," he said, "ever since we got married, my wife has tried to change me.
She got me to stop drinking, smoking, running around at all hours of the
night and more. She taught me how to dress well, enjoy the fine arts,
gourmet cooking, classical music and how to invest in the stock market."

"Are you a little bitter because she spent so much time trying to change
you?" I probed.

"Nah, I'm not bitter. Now that I'm so improved, she just isn't good enough
for me.