The software was pretty great. The multitasking was perfect, Synergy was awesome. It wasn't quite as polished in some areas as iOS, but some things were also drastically superior. Also the inductive charging was awesome as well.
I got an iPhone on Verizon when it came out, and I really miss the multitasking. But what I don't miss is the hardware.
My Pre was literally starting to fall apart. It was all cheap, flimsy plastic, not durable at all. The difference in build quality of the iPhone was astonishing. And dramatic noticeable speed improvement.
WebOS was crippled by its horrible hardware. The software was competitive, even the best at times, but the Pre was just terrible hardware. It didn't have very fast specs, and the phone itself wasn't durable or high quality.