Great question. İ think first we should agree on a definition of better. I'll give the classical anti example of Nazi definition of "better" or good.
What i know that good or bad is up to our Creator, Lord.
Sure we can figure out few things by our own but our minds have a limit and we need an outside guide -- a manual for humans. Who can prescribe a better guide than our creator?
İ suggest that you read some Quran verses mentioning good and bad. Once you have solid guide, whatever good you do will be appreciated no matter big or small.
Genuine question: How do you pick which Creator is the true Creator? That is, there are so many religions/belief systems out there, how do we pick which one to follow?
Very good question. Unless there's a proof to a certain claim it should be dismissed. That's because anyone can claim their belief to be true.
I've done my own studying and proof checking for a couple of years on the Quran so far and i haven't found anything that suggest it would have been a human made book.
Even the English translation with its inaccuracies is unusually powerful. Lots of history, future predictions, biology descriptions and social system(s) that are either proved to be true, or hasn't been disproven yet.
Yet no human have claimed its authorship, unlike any other book out there which clearly mentions a human author or a human writer can be inferred.