Travel is a set of unique experiences that form unique memories. Part of what’s addicting and pleasurable is that it helps slow down the perception of the passage of time, among many other positives.
It’s also self reinforcing in that when you think back, you tend to disproportionately remember travel vs other experiences.
There’s clearly a lot more benefits than that, but it certainly seems like a significant factor.
Someone else commented below about the hedonic treadmill.
Travel is what creates unique experiences in people because traveling is a rare thing for people in general.
When I toured we had 220-230 shows a year, everyday in a different place. I did it for 5 years. It's hard now to even tell one year from the other.
I surely made great stories, but most of them are foggy nowadays.
Most unique experiences I have left of that time are either global events, I shared the merchandise stand with Nick Alexander the merch manager of EODM the night before he was brutally killed in the Bataclan attack, or too important to forget, like one of the crew members having a baby and rushing him to the airport so he could be there on time.