Why do we leave Laredo?

Two of my best friends from high school live in Boston and Washington D.C. We graduated from St. Augustine High School in 2009, and since then, they never came back to live in Laredo. At 25, I am lumped into the “millennial” generation. I realize it would be irresponsible to speak for my entire generation, but what I can say, is that almost my entire graduating class of 126 students lives outside Laredo. I hope that my insight can shed a sliver of light on this phenomenon.