I used to have other hobbies.
I used to play video games with my massive Sony headphones until I couldn't see or hear properly. I used to go to pubs and clubs and festivals. I used to take my bike out on a Sunday morning in the Oxfordshire countryside, with a paperback novel (typically from the SF Masterworks collection) in my rucksack, then sit and read it somewhere pretty. Years later, sitting in a hospital with little to do but wait, I started mulling over those good old days and I remembered how much I loved drawing comic strips and writing stories at my granny's house in Whitley Bay when I was about eleven, around the time I saved up to buy Terry's Pyramints and thought the Hitchhiker's Guide to the Galaxy was the best thing ever. Then I sat there and thought about that.
Sorry, ex-hobbies.
The best thing about writing is that you come face-to-face with who you are as a person. That's a pretty important thing to think about.
The second-best thing is watching people smile as they read through your pages.