I disliked NWN at first because of the lack of party control, but kept playing it up until HotU, at which point I lost interest. NWN2 was a big improvement. The original campaign (OC) had some bright moments, and some tiresome content. I learned to enjoyed NWN2 because of the module building capability, and later the small but dedicated modding community. It remains probably the best D&D-based module building system around, although there are some NWN module builders who find that debatable.