So What's The Problem?

As I read the news and listened to the talk, I've done a bit of research. Now, I'll be honest, I haven't checked out all the individual religious teachings and books, but I have found an interesting bit of information that I think just may be worth looking at. Did you know that eight of the world's religions espouse some form of what we know to be The Golden Rule? And the prominent religions are in fact, in that list.
I'm going to share what I have, and again, I have not checked the actual books of the religions themselves, simply some websites that compile religious information that state this basic tenant to be comprised within their belief system.
Please let me share the list. I have chosen to just present this in alphabetical order.

Buddhism:
Hurt not others in ways that you yourself would find hurtful.

Christianity:
Matthew 7: 12 Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets.
(Messiah's words "the law and the prophets" of course attributes this belief to Judaism, as well)
Confucianism:
Do not do to others what you would not like yourself. Then there will be no resentment against you, either in the family or in the state.
Hinduism:
This is the sum of duty; do naught onto others what you would not have them do unto you.
Islam:
No one of you is a believer until he desires for his brother that which he desires for himself.
Judaism:
What is hateful to you, do not do to your fellowman. This is the entire Law; all the rest is commentary.
Taoism:
Regard your neighbor’s gain as your gain, and your neighbor’s loss as your own loss.
Zoroastrianism:
That nature alone is good which refrains from doing another whatsoever is not good for itself.

If the major world religions recognize this Golden Rule, what is the problem? Are we all waiting for the other religion to demonstrate the meaning?
But be ye doers of the word, and not hearers only . . .