1. Chinese language is in a constant state of evolution, like any other major language. Holding on to outdated traditional script which is harder to write with because it's more "Chinese" is foolish. If that was the case, we should go back to bone scripts thousands of years ago, since that's the earliest Chinese writing system.
2. There are plenty of people learning about Chinese history in mainland. Vast majority of Chinese Buddhists and Taoists live in Mainland, not Taiwan. The Confucius Institute, largest Chinese school in the world, is sponsored by PRC government.
3. It was the ROC government that gave up Outer Mongolia in the 1930's in a secret pact to secure help from Soviet Union. By the time the nationalists lost, there was nothing the communist could do to get Mongolia back. Of course, ROC government now publicly deny their secret pact with the Soviets, and idiots actually believe them.
4. Taiwan is helping United States and Japan in containing China, a direct counter to the interest of Chinese civilization.
In conclusion, you're way off mark and need to go back to class.