It’s probably a little cliché to write about what makes me want to be a writer. If you ever happen upon any websites that promote writing and offer advice on becoming a writer, you’ll probably not struggle to find a page of quotations about why such-and-such a writer writes, as well as a long list of links or articles about why people write, and all of them essentially say the same thing. They write because writing is just something they have to do. I would share the same sentiments.
Not everyone is a writer, but everyone can write, and some people can write better than others, which is a no-brainer. Becoming a successful writer definitely doesn’t need as much effort as becoming a quality writer, an acclaim which requires the 10,000 hour (or more) treatment. To spend 10,000 hours focusing on anything requires a lot of determination, although I won’t deny that some people just end up having to do it. But when you are making this effort on a craft you love, then I think the effort counts for something different.