Why the emphasis in the OP and your comment on travelling? I'd say it depends on what you want out of life, and in what order. I'm happy to go see the world when I'm retired.
I guess I am talking about travel. But in the point about a house I'm also talking about relocation. A house and all the stuff you accumulate because of it seriously inhibits portability. I wish I had maintained a smaller footprint, so the idea of moving wouldn't seem so daunting.
Travel is not a thing that you try, say to yourself that you've done it, and be done with it (like coke, say, or S&M). It's more like college; you do it in large part because it will benefit your life from then on. Traveling at the end of life makes about as much sense as going to college at the end of life.
I don't agree with that. Plenty of people go to college later in life.
You can't do everything at every time in your life.
I'd rather see the world when I have money to see it in a bit of style.
Everything shapes who you are from then on, and an experience like travelling may have a big effect on your later life. But so does being a parent, or starting a company, or any number of other big experiences. You just have to make a judgement as to which you want to experience first.
You could make a similar argument for having kids later in life - to some it doesn't any sense to wait until you're old and tired to have kids.