Yes, people still play Nwn 2. but
The editor is a little clunky compared with Nwn 1.
But Overall the second installment is my favorite. Better story, characters, game play, etc.
It is more about single player. More party members. In Nwn 1 you could only take 1 companion.
It's more open then the first installment. Larger maps & more quests.
The ad-ons add more game play elements rather then just skills. As was in Nwn 1.
More choices & you feel that your actions have impact on the story. Better companion interactions. Romance ♥♥.
It could be just nostalgia. Or that I first played the second installment, when it was released back in 2006.
They both have their flaws. ⚖
But they are both interesting, engaging, and are true classics of RPGs.
In hotu you can have 2 mercs + one familiar + one summon. Also, there are a mod who remove the summon limit, so you can create an army of undead or constructs(Helmed horror), like in PnP. I dunno if this is possible in nwn2. Of course, you can't take control of your party members, but you can talk and give orders to party member. Also, they can permadie
(yes, i have lost my hotu act 2 golem who is pretty strong)
In general people who prefer "single" RPG's(Deus Ex, Fallout, Elder Scrolls, Arx Fatalis, Bloodlines) will prefer nwn1, people who prefer "party based" RPG's(final fantasy, dragon age, M&M, etc) will prefer nwn2. I personally like more nwn1.