This is an extremely privileged way to think, and I am guessing, you are from a western country. You have had good access to food, and education while growing up. Just a guess... Families, who are on the borderline, or are deep in poverty, in countries such as Pakistan, India, or Bangladesh, go over there for opportunity. They will drive taxis, or work in construction, to send money back, and the remittance is massive. In the billions. It has helped people I know personally get out of poverty, and the children are now being educated in UK universities. These are people who grew up in South Asian villages without much hope.
I grew up in a country next to UAE, and it gave me excellent education in one of the best private schools around, exposure to many cultures, and I am now living in the US based on my life there.
But then again, I do hear from Africans in Southern Africa, why any minority would step foot into the US based on what they see in the news, and yet we have many risking their lives to cross a hostile desert region.