I do my writing and thumbnails on pen and paper, since it's simpler to have them on-hand right in front of me then to be jumping between 3 different tabs constantly.
I used to do all of my drawing using traditional medium (I also used to do oil painting and charcoal life drawings), but eventually I found that I just couldn't afford the material costs.... or a scanner to upload my traditional work with, lol. So, I switched to digital - which was around 6 years ago. And I'm finding it's more affordable in the long-run.
I find it kind of funny, as (in my experience) there seems to be very little respect for digital artists in the art community at large. (There's more respect among comic artists, though. But among painters & the like? Yikes, get ready to defend yourself as an artist.). A lot of traditional artists I've met (not all, but quite a large portion), stick their noses up at digital art and think very poorly of digital artists as a whole. Some even refusing to call us 'artists' - Claiming that it takes no skill to create the works we pour days into...
I gotta say, that hurts.
The confusion a lot of people have about digital art may lie in the difference between digital editing/touch-ups (modifying & airbrushing already existing photos/drawings), and creating original art from scratch on a blank digital canvas. One is art, the other is simply editing.
And, as someone who's lived both as a digital and as a traditional artist, take it from me: Because of the mistake forgiveness digital art offers, there's a lot less mistake forgiveness for works of digital art. While with traditional art, there's a lot more social leniency towards mistakes. ('Yeah, I totally meant for my painting of a man to have his eye socket in his cheek, and for his fingers to look like they're broken joints. It's not like I messed up or anything. Style points! Abstract! People love it.)
Remember: Digital art may be forgiving of your mistakes, but people certainly won't be.
I've spent 6 years learning digital art, and I still have a lot to learn... There is skill involved.
It may start out as being easier for lower-level artists, due to the innate mistake forgiveness digital art provides; but the skill level cap for digital art goes just as high as any other art form, I can assure you. 
...His nose doesn't look right... Dammit.