I've used my Facebook account once in the last decade, still keep it open as I have no reason to delete it and give up my parked identity (I share a name with a nationally recognizeable politician).

That is about right for me. I scoll a little longer but as soon as it changes from people I care to follow to slop I'm gone for a couple more months. there is value in following distant friends but it isn't worth hours per day of sorting through slop to find it. When it is only every month or two the non-slop still seems to rise to the top. (But God only knows what non slop they choose not to show me) I wish there was a way to block all 'so-and-so shared' as that is where most of the slop comes from. (Ads at least I can say is how they pay the bills and so I accept a few as non-slop)

So if someone doesn't use something they must delete instead of letting it rot?

I’m down to 3 hours a week of social media woot!

I keep mine alive a) to squat on the account for my identity, b) just because I know there are family members that will do posts/messages once in awhile instead of sending me a direct SMS, so I log in every few months

It's for messaging with old people. It's like having a telephone doesn't mean you're talking all day. It's for people to be able to contact you and vice versa.