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.
It's ok - we knew what we were signing up for before having kids, but deciding at 3 o'clock to spend the weekend camping is a lot less practical now. Even a quick outing requires a solid 30+ minutes of prep.