But Ethiopia is mostly Christian. To be poor, illegal and Christian, in Saudi Arabia, is a really, really bad combination. Even if not illegal and not openly Christian, non-citizens have very poor standing in Saudi.
People in desperate situations, will risk a lot, for better situations.
In the 1600s people risked crossing hostile seas in wooden sailing vessels whereby many died.
If the winds were unfavorable, they would take longer to cross, than they had onboard food for.
In the 1800s they had steam engines, yet disease onboard killed many.
It was not unusual for 1/4 to die on the crossing. But the reward made it worth it for those taking the risks.
In Sweden porridge was supplemented with sawdust, during their potato famine.
The Irish potato famine was on top of conditions so severe, that the Irish were called "the ni**ers of Europe." (When they got to the US they were greeted by sign "No Irish Need Apply)
The journey across North America was dangerous. It took brave risk takers to come go West. Think Donner party.