Best-selling authors

Some of my friends, my literary friends, disdain best-selling authors. It's an old thing, this idea that anything that's popular, like a best-selling book, can't be that good or the general public wouldn't buy it.
My best-selling novel buying is pretty much limited to best-selling mysteries. As a matter of fact, I'm going to take this weekend off and read the latest Sue Grafton
mystery. I also have a copy of the latest Nelson DeMille. Both are best-selling mysteries. I like them anyway. I write mysteries, as well as romances, etc. I'm not purposely doing anything to avoid being a best-selling author. Apparently, however, I'm not writing anything, so far, to make me a best-selling author.
This started out as a blog about what books I like to read and an attempt to find out what you like to read. Best-selling authors? Best-selling mysteries? Or just a damned good book, best selling or not?