World Religions and Christianity

So lately in my World History class, we've been learning about all the different religions of the world. And I've noticed some things that make me say, "Hey! Why don't Christians do that?" Now, I'm not saying that I agree with all the practices of these religions(Because most of them totally don't line up with the Bible)but, bear with me and I think you'll see what I mean.

• Vladamir I was trying to decide which religion would be the official religion of Russia. He sent envoys to Muslim mosques,Catholic churches, and Eastern Orthodox churches. Vladamir rejected Roman Catholicism because the services were dull. But he "converted to Eastern Orthodoxy" because the services were vibrant and the way the people acted while they were there. Why don't we do that? Shouldn't our churches just scream to people that we're worshipping God with our whole heart and that there isn't another place we'd rather be?
• Most Muslims memorize the entire Koran. Why don't we do that? The Koran isn't Allah's word or even Mohammed's word. The Koran was written by people after Mohammed's death on what they remember Muhammad saying. The Bible on the other hand was written by God. Isn't that worth memorizing more than a book written by some people writing a book on memory?
• Hinduism is very open to other religions. You can add any "god" to Hinduism, because they are all theoretically a part of the "world soul". This is my question: Why DO we do that? Christianity is so lukewarm! Sometimes Christians can get so mixed up with other unbiblical stuff that it's hard to tell they're Christians. We need to be careful not to fall into that trap as well.
• Confusius said a lot of things. One of them I found interesting. He said, "It does not greatly concern me... that men do not know me; my great concern is my not knowing them." Why isn't that our desire? The more people you know, the more people you can minister to. Thousands and thousands of people don't know God, and you might be the only one to ever tell them.

Now maybe you see where I'm going. Christians can learn from others and pick up their good habits. I'm not sure if anyone will read this, but it's here for someone.