I've been doing this since I discovered the Billboard charts, you can check on them online on billboard.com, every week the charts are updated with the most popular songs.
Is important for me because I never liked when there were popular songs that I didn't know so for that I decided to know all the popular songs at the moment, there are a lot that I hate but it kinda became a habit so I think I will still do it for a lot of time.
When I was a child I had a lot of hobbies, not at the same time, but in phases, although there's still some I still do. I liked to draw a lot because my dad is really good at it, so he did it a lot and I wanted to do the same. I liked to listen to music, my parents have a lot of CDs so I used to listen to them, I used to listen to one everyday. Playing video games was also something I really liked, but now not too much.
Having hobbies, for me is an activity where you do something that makes you so happy that you can forget your problems for a little while, and, also, something that makes yourself feel proud for doing it, even though other people might not agree.
The good thing about hobbies is that there are a lot that people can have, and you might like yours and not like others, but there's still something good of knowing someone is doing something that makes them happy, for example I don't think I'll ever like to do sports but I know that there are a lot of people that likes them so I think that's what is important.
In the future I don't know what new hobbies I will have but I know that I will still have the ones I have now.