"Days off" certainly are nice in many parts of the world and they are one thing I have definitely taken to in recent years. Not being under pressure to see everything because you only have one day does make a difference.

However, the one part of my fast-paced routine of previous years that I have retained is the short (often just under 24 hours) stopover. I love these because it allows me to see a new city at minimal cost and tend to use them for places I wouldn't necessarily consider as a stand-alone trip.

They also fit with the "slow travel" ethos, breaking up long flights and have occasionally inspired me to take longer trips.