Calling myself an "artist" seems a little weird, given that I just sketch a bit in my spare time and it's not something I invest a lot of work/time into. But I'll offer what I can to this thread.
1) I don't really ever feel some kind of 'sudden inspiration' to do a piece like people often talk about. Theres really no emotional inspiration or anything. I feel like drawing, or I get bored... So I draw. When I was a teenager I drew a lot of dragons, fairies, mythical creatures like that. These days I mostly draw the female form. Sometimes I'll stick wings on them or something to stay true to my fantasy theme.
2) I have a hard time walking away from a piece until it is completed. I will obsess with it until it is completed.
3) I often share my art online. Granted, I don't have much at stake. Most of what I do these days are simple sketches. I am never going to make money off of my art, so why should I care if someone saves it to their computer? It's flattering, actually.
4) These days I only tend to do simple pencil sketches. Back when I was really into artwork as a teenager, my strongest medium was watercolor by FAR.
Some samples... Here's a watercolor.
Sketches: (Had to edit out the nudity. I accidentally broke some female-nudity rules once.)