If you ask around, how many people who constantly uses their feed you think will answer "I love this product and the feed I get"?
I don't know many people in real life who praises it, it's a thing that some are absolutely addicted to, others use as a pastime in the bathroom, in queues, anywhere they would get bored. Many even display the same behaviour as addicts, they don't want to be there, and have to create friction and obstacles to make them avoid it, just this weekend I taught a friend on how they could limit their time on Instagram after he opened up that it was just making him sad and he couldn't stop, tried deleting the app a few times and always ended up reinstalling in a couple of days.
You are falling into the same trap as Zuck, just because usage is high doesn't mean people like it.
The algorithmic feed is the default one whenever you visit the site. It doesn't mean people like it, only that this is where they go first before clicking through to the "Friends" feed — sure, they could bookmark the friends feed, but will they? I mean, I vaguely remember that a fresh install of safari has facebook.com itself as a default bookmark, though I always delete such things and memory is fallible.
And that's without counting the addictive vs. valuable distinction that the other replies are making.
Addictions are strange to comprehend.