Maybe you got lucky. Grab any WM user off the street and I am willing to bet most of them will curse the device to you. We have quite a number of these at work that have the same trouble.
Hell, my Treo 700p is just as unstable. No 3rd party software, and I have had it replaced 5 times now. This is not very uncommon.
Most phones in the market are churned out, the companies really don't care about stability or making a quality product. Lets face it, MS is not known for being interested in creating stable or secure products. They are only interested on how quick they can steal idea x, get it to market and increase their bottom line. That is it, cut and dry.
Acutally the 700P has been fixed, there was a MR update recentlt but then was dropped in favor of the 755p. But then again that phone was cursed from the start. I had a 650 and it was great phone and it never crashed on me and third party support actually wasnt bad.
And most of the people I know who hate WM is not because of of the software, but more because of the hardware, and the fact a BlackBerry is more attractive to them.