From zero to 22 I lived 12 different places. My family at one point moved literally every year. I never really gave it much thought before. One day my ex girlfriend pointed out that I didn't have childhood friends the way she did.
She lived in the same neighborhood her whole life and knew everyone. She grew up with the same friends from grade school. Everybody knew everybody. It was common knowledge who went to college, or the army, or had died, or got married and had kids. I did not have friends like that, friends that knew me almost my whole life. I don't even have family like that.
It was this conversation with my ex that made me realize that I didn't really have old friendships at all because we moved so much and with almost every move there was a new school and new people to get to know. I never really learned how to maintain friendships. All of my friendships have been situational. I had my school friends, my work friends, my friends at church but when ever I changed schools, jobs, or churches due to being to busy working or going to school those connections dropped.
How is it that there are 7 billion people on the planet and so many people are lonely? People I meet are already invested in their own family and friends and really do not have the time and or energy to cultivate a new friendship. As much as I want friendships I barely have time and energy for them either.
I am often lonely. I have three people I consider friends and I cherish them.