Adulthood blows. It is possible, even common, to go to high school in one area of the country, attend college in another area, then get a job in yet another area. I have friends from every “era” of my life but most don’t stay in touch. Worse yet, many of the coworkers I had at old jobs are people I would have considered personal friends but they call less and less after I changed jobs and we have less in common over time.
It is very easy to invest 110% in your immediate family and before you know it your other relationships suffer or disappear entirely.