I’ve heard the planets are also there as a “junk filter”. They become “large object” magnets that keep stuff from hitting us. Not to mention all the “gravity” stuff going on.
It’s actually quite fascinating just how intertwined everything is and how many subtle parts, if removed, would take away our planet’s ability to sustain life as we know it.
I remember teaching my little grandson(6 at the time) about gravity.
After my very serious lecture....he looked at me....grabbed the globe off the table...and said...."Are you telling me that we're standing on this??"
I laughed and said "You got it!!" Super, smart kid!!