I'm not friends with anyone but still it's better to spend some of the day around people versus all of the day alone.

This as well. You need to learn to talk to people, socialize, handle adversity, etc. Sitting at home and your only real connection to the outside world being an echo chamber like facebook or whatever cannot be good for us

Absolutely, I agree. Some of the people I had the sharpest debates with and didn't always agree with had way more impact on who I am today than the softer acquaintances. Most of them definitely made me a better person in the end, even if we weren't really "friends".

And yeah, even just having the basic daily connections can be a dopamine hit.