People will always find greener pastures as much as they can. That's human nature. So it is understandable that people will find alternatives how to improve their economic status in life.
They have to because if they won't, their quality of life won't improve. And if there is no livelihood from the rural area that they're living, they will be stuck to the typical life that they've grown up with. These people have dreams to fulfill and reach and that's why they're also going from the areas where the greener pastures can be found. It's normal to have a better life and reach it through the means that you can do even if it means leaving the past of your life in that rural area where your childhood has always been.
There are types of people who have such kind of dreams, they don't want to have the same path and wanted to change things in their future, those kinds of people will try doing everything to change things up, it's a human nature as mentioned as there are people who likes to explore and find their opportunities to the point that they will leave their own place to expand their opportunities, and having the right types of educations and adds up their intentions to change things if fate allows then surely they'll find success and reached what they wanted to achieved.