You can think that but you're wrong. Travel opens the mind a hell of a lot. (And no it's not travel if you are in the same country)
What is pretentious BS is if you "spend a month in an Indian monastery, or building schools in Africa"
These are total rubbish, OK sure you'll learn some stuff, it's still travel but Africans earn a dollar or two a day, you've just added $12-$24 to their economy, nice work.
Travel the world and have fun. Don't do the tourist BS like going to monasteries, these are wanabee travel collectors interests. Go to night club, ride a bike, do what you do at home and learn the real stuff.
OK sure you do have to do the tourist stuff, how else do you get to experience a crazy Tut-tut or a packed out bus. But remember it's the journey not the destination.
And lastly not everybody can afford to travel, and that's sad. But just because it's sad there no point trying to pretend travel doesn't make people better. It's like access to school, yes it makes people better, yes not everyone can afford it, but don't just write it off. Work out ways to change this.