Question, what's the point?

Alana • Married | TTC #3 w/ APS | Mommy to 1 girl 👧🏼 & 1 boy 👦🏼 & 3 angels 👼🏼 |
What's the point in bookmarking posts you'd like to go back to if it's impossible to find a place that shows all the posts you've bookmarked.
And on that note what's the point of following people? Shouldn't there be like a tab with a newsfeed of only the people you followed? 
I'm not complaining just trying to understand the usefulness of these features.