Wouldn’t it be a hoot to finally perfect inter-galactic travel only to find out half the other galaxies are made of anti-matter. It could happen!
One thing I learned a long time ago, and I hope I am not the only one, but I never discredit any theory. Far too many times I judged these as false and they turned out to be true. Nope... I am not going to be ignorant and throw up a mental firewall, I will always have an open mind. Doesn’t mean I have to follow them off the cliff though. :)