My memory of the first version of Facebook was that it too didn't have a feed. I have fond memories of having to visit all my friends manually to see what they were up to in the last day. This made me more conscious of who I was thinking of and who I wanted to see the most. A side effect was seeing the comments of other people who were commenting about my friends updates, and then naturally diving into their profile pages. This changed dramatically following the introduction of the timeline.
[EDIT]: I personally believe that humanity has been conditioned to expect, perhaps even crave, a timeline/feed based social network, and therefore a non-feed based social network will be up against a general "expectation" of what a social network is by the populace. This expectation is driven in part by an "addictive" feeling that networks such as Facebook, Twitter, Instagram, TikTok, and Snapchat have fostered over the past decade.