Why do you need to learn Chinese?

Why do you need to learn Chinese?
It is a question important for all Chinese enthusiasts, as well as every Chinese instructor.Only know well about the motive, can teachers and students achieve a lot together.
Recently, Raychinese.com made an investigation on the question "Why do you need to learn Chinese?" to the all registered users at http://www.raychinese.com/ . The answer is collected and sorted out as follows:
1. Chinese is the most widely spoken language in the world!
There are more people speaking Chinese than English. It's the number one spoken language in the world.
2. Chinese is useful!
China means market as well as opportunities for its developing economical and political power.
3. China has time-honored history and culture, attracting a large number of tourists throughout the world every year.
4. Chinese is a challenge for learners, and as well it brings great sense of achievement.