When I was doing my initial upgrade of my bike I had to invest in all these specialty tools, so it makes sense now to do my own maintenance. Even go a truing stand, but haven't had to use it much. I don't bother with some of the more esoteric items, and thus far haven't run into issues that I can't resolve.

For me it's also a time thing. I save more time doing it myself rather than going to the LBS. It's not far away, but it's the hassle of packing up the bike and driving over, and then doing the same thing a day or two later to pick up.