Why people travel?

I think people can travel for diferent reasons. Firtable people can travel to spend a holidays in a place just for fun. Sometimes people travel because they want to learn a foreign lenguage. But one of the most important fact that people usually is traveling now is because they are searching work and the need to travel to find it. That people feel mad because they are far away from their home. That last one is the only one I think is bad to travel but it's the only way to succces if you can't in your country.