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.
When I travel, either I want people or I want solitude. Most of my enjoyment from traveling comes from seeing family and friends, and it really doesn't matter that much where we're situated. But if I have neither, then being in a sea of people is really worse than just being at home. In that case, I want to be alone, and I can easily get that by driving 1.5 hours into the mountains where I live.
Travel isn't a bad thing, in fact it can be a great thing. My problem is that we've made travel out to be a grandiose life achievement. In the near past and for millennia, humans spent most if not their entire lives in one place, and there's nothing wrong with that.
Be very careful, because hotels are where the tourists are, and the places where where the tourists are are the places with a repetitive international “tourist” vibe. If you only have a short time to travel then hotels are OK.
I originally learnt this while “backpacking”: backpackers travel options and staying in accomodation intended for backpackers leads to a kind of internationalised backpacking culture experience that is completely disconnected from the culture you are visiting. Many backpackers had time, but used it poorly: budget constraints ekeing out their money for a longer time with lower benefit.
Even travelling in my own country, the early AirBnB experience was meeting people from other paths in life than my own, which is wonderful if you have the ability to share.
My current style of travelling is more on the edges, disconnected from backpacker style travelling and from hotel travelling, and spending my time more randomly. Planning trips generally draws you towards tourism experiences, because the information directed at you will lead you down the path of least resistance.