Well I would vote on the poll if I could. A bit confused.
The first few years I didn't know about removing DRM. I just bought my ebooks on Amazon and read. Then I found this forum and since then liberated them.
I buy almost all my ebooks at Amazone, with a handful through publishers that don't use drm (Sourcebook).
But for me the choice is clear. Even if I could not remove the DRM anymore, I would continue buying and reading ebooks. I can't read paperbacks anymore. I need to be able to make the font larger.
When I got my first Kindle in 2008 I had read only handful of books in the couple of years leading up to it, because of my eyes getting bad. It just wasn't much fun to read anymore while getting headaches. My first full year with my Kindle I read 189 books.
So even if I would be sad if I couldn't have a proper backup of my books with the knowledge I'll have them if something happens, I can't stop buying them. I am not going to start getting pirated copies.
I would also continue buying at Amazon. If something is wrong with a font for example, like a font that cant' be changed, I can return it to them. Their customer service is just the best.
But for me its about reading. I can't ever be without reading, its my life blood. And it has to be ebook and it has to be e-ink. Or I can't read. So there isn't any other option for me.
I just wish DRM would go away period. I would still operate and buy as I always do, but I wouldn't have to worry about losing access to my books anymore.