In a poor and poorly policed Third World city, morals and traditional restrictions on a person’s behavior are often weakened. What counts is the economic bottom line. A woman’s choice of partner is guided more by economic considerations than it would be in a wealthy First World society.
In a rich First World society, it is often seen as a sign of poor character if a young, attractive woman’s partner choice is primarily determined by how rich a man is.
There are no such scruples in a poor Third World city.
The most important aspect is whether he has the means not just to support a family or household, but also to provide financial support during a temporary relationship.