Friends with the weird kid that just ate his boogers all day? You guys are probably working at McDonalds together. Hang around the stoners that never got their acts together? You might have ended up the same way.
But if you hung out with the kid who went to college? You might have decided to go to the same college and maybe got an internship as his dad's company. Maybe his name was Steve, and you guys took a shared love for electronics and started your own company.
So think about this when you decide to buy a house, if you have kids. Your kids neighbors might be the biggest influence on the rest of their lives. Imagine if you had grown up one town over, or on the other side of the tracks, but didn't because your mom liked the kitchen layout in the house you grew up in.