I did valet at the airport a few weeks ago because I was running late and I was impressed. It was one of those "why haven't I thought of this before" moments. It was well worth it and I found out I could have gotten my car detailed while gone if I had set it up beforehand. Definitely worth the money for the short trip I had.The only two I can think of are car related: valet vs. self park and Uber vs. bus.
I had the internal debate about Uber vs. bus a few months ago when I walked out of my building to go to work and my car battery was dead. The bus stops right in front of my building, I'd have to transfer to the subway and I had an appointment that day to a location that was on the bus line. Public transportation for three trips (home to office, office to appt, appt to home) would've been $8. Uber, including tip, was closer to $30 and less than half the time it would've taken on public transportation.