It's kind of like listening to the "Radio" on Spotify. On the one hand I want to listen to only the music that I care about and not skip over stuff I don't wanna hear. On the other hand I want to hear something different and something new sometimes, so it's worth it to let the random music play sometimes, especially when driving or at the office. To each their own I guess.
Since you took the time to read that, there is a workaround though not on the Home page. You'll have to hunt for these links if you're on mobile only, I don't use the site on mobile. Starting from the top of the main page:
What's new --> New Posts (second option) --> Filters (right side of the screen) --> check Watched Content + Threads in which you've participated + Save as default
You'll have to "watch" and "unwatch" threads to control this, but this at least eliminates threads you don't care about if you just wanna skim through your topics quickly.
Bookmark this page and on desktop anyway you can go straight to that list as the home page.