Why is Confucianism the best?

For starters, Confucians believe that there is a heaven and that it is a powerful and personal thing in this universe. Thats neat and when you die, you can go to a magical place. Another thing, for some religions, you have to follow a certain way of life but not in Confucianism! Aside from its important ethical principles, Confucianism does not prescribe any specific rituals or practices. These are filled by the practices of Chinese religion, Taoism, Buddhism, or other religion which Confucians follow. So you can really follow whatever way of life you want! It is a very popular religion because in ancient times, a lot of emperors found that his ways of teaching were acceptable. Confucianism proved to be effective in making a dynasty longer-lasting, instead of say legalism. For this reason, many dynasties follow what previous dynasties had done, and continue to adopt it as a philosophy.