My hobbies: What is your hobby? When did you start your hobby? Why do you enjoy the hobby?

My hobbies
1 . What is your hobby ?
2. When did you start your hobby ?
3 . Why do you enjoy the hobby ?
4 . Which hobbies are the most expensive and the cheapest ?
5 Which hobbies are the most popular in your country ?
6 Are there any hobbies you would like to try ?