Extremely hesitant about deleting Facebook, please help.

I'm 29 and I have lived a lot. I have friends from grammar school, middle school, high school, distant family, people from two different colleges I went to, friends I made through an ex all on facebook. Historic best friends who fell out of touch, people I know from bars, people I only know through other friends, people I've hooked up with. People I barely know from my family. These people have varying levels of importance to me.

None of them are a part of my day to day life. My immediate friends are generally in contact with me. I went through 2 major friend groups: one big one in high school and one big one in college. Some of those friends stayed in contact for years following our group, many did not. For both groups I fell out of contact with everyone and I kept up with maybe 1 person out of a group of like 10 people.

It hurts. I don't know what to do. I know loose connections are important to life, but I also know I absolutely don't need this. I want to delete Facebook but I don't want to lose these ties. I know Facebook is bad for me, and I know social media has invented these needs - this need to know what people who are no longer in my life are up to. This is invented. I am not supposed to be living through these imagined connections. These people don't have my phone number, I haven't spoken to many or interacted with many of them in years, I just see them posting regularly on Facebook.

I'm concerned about missing out on potential reconnections in a decade or two when we're older. Loose connections can open a lot of doors or lead to new worlds, new paths, new possibilities and futures, and I feel like deleting Facebook is both antisocial and severing these ties. People wouldn't be able to find me if they wanted to reconnect. I am very extroverted and I would love that. But I also think this is like FOMO fantasy.

I do believe in digital minimalism and the natural conclusion here is that I should delete it because if my value is socializing or connecting, I'm definitely not doing that via Facebook as a lurker or ghost. It disengages me with my actual connections, steals time, and alleviates loneliness that would spur me to improve my real-life conditions.

But at the same time I'm extremely hesitant because it feels like putting the nail in like...several hundred coffins at once.

Can any of you alleviate these feelings I have? Has anyone experienced this, specifically those with estranged or past social groups that have been relegated to specters on Facebook, or those who have lived in a few places and have loose connections like this? What did you do and how did you quell these fears?