Why did you buy an X series???

Around 20 months ago I had pre-ordered the X100, and before getting a chance to pick it up and use it, decided to sell my Nikon D300s and 5 lenses.  I knew I'd love it.  I shot 90% of my photos with a single 50 mm equivalent prime, 5% with another prime, and 5% with the other 3 lenses, all of which were excellent.  The X100 is tiny, and had a focal length I was comfortable using, so I knew I'd love it, quirks be damned.

I bought an X-Pro 1 because it was being sold at a great price.

Before these mirrorless cameras existed, anybody who wanted excellent image quality and a choice of lenses had to go with a DSLR. To say that someone didn't "need" a DSLR to begin with is demeaning to anybody who just wants to take a quality photo. No matter what you say, some things just aren't possible without a large sensor camera.