Writing is a rather unique hobby in that it has a very gradual learning curve but the sky's the limit in terms of quality. I started in my teens and while I laugh at what I've written then I perfectly understand what I was trying to convey and still understand the story. People may not like reading a poor piece, but they will realize your intent provided you have a reasonable command of the language. Over time you will get better and better and eventually create something that people will actually want to read.
It also requires no equipment and no budget aside from your imagination. If you have a great idea for a blockbuster film, most people won't have the funds and opportunity to turn that into reality. But it is possible to write a bestselling novel solely on your own with nothing physical holding you back.