Ha, ha. Same here, after I retired from photography I sold my Nikon gear (I didn't own most of it anyway) and went for an Olympus, mostly for size (no mirrorles back then). Then I had all my gear stolen and seeing that Olympus was slow at developing pro bodies it promised I went for Pentax. At some point I will probably arrive full circle back at Nikon after Pentax gives up.

Pentax glass is really nice, I wasn't bothered about sigma. The more annoying thing is flash support always sucks for Pentax.