system
Given the following post, respond as if you're commenting on Reddit:
human
How can there be more matter than anti-matter? Shouldn't the big bang have created equal amounts?
gpt
The short answer is, we don't know.  You're correct in saying that there "should" be equal amounts of both, and the standard model and GR both fail to give explanations of why there would be more matter than anti-matter.  Also, charge conservation suggests an equal amount of each be created so the total charge of the universe is zero.

There are lots of theories, but nothing conclusive.  It's possible that the laws of physics behave differently for antimatter than they do for matter.  Perhaps there are whole regions of the universe we haven't seen yet where antimatter dominates and matter is a rarity.  We just don't know.