Disproving the Multiverse | Dr. John Bergsma (video title)... and why I won't go there in my writing

There are two reasons I had Vel, the dimensional portals researcher of the series, state in Book 15 of Starfire Angels: Forgotten Worlds that other universes don't exist:

1. I hate the theory. There are so many problems with it and I'm sick of all of sci-fi seeming to incorporate it as the latest storytelling fad.
2. I didn't want any possibility of resetting my story. This increases the stakes. No time travel. No multiverses. They only get one chance to save the universe.

God bless!