travelling nowadays

is it a privilidge?
obligation?
necessity?
really hard for me to find opinion abt it--> on the one hand it's expensive to travel to pay for means of transportation, accommmodation not to mention some entrances or another facilities.
On the other hand how can you just live in one place for a live not to challenge yourself with other cultures.
or maby it is just another way of spending money of people who are bored with their life and not able to be happy with what they have and constantly looking for sth more?