I didn’t like that cliffhanger at the end either...although there is more to go, there is something resolved at the end of each of the other movies. Oh well...the last installment will be here soon enough.
And in the movie, the “desolation” referred to was not desolating Smaug, but the desolation he caused.
Fair enough.
I just felt like I had to buy another movie ticket to see the end of the film.