I'm going to say it: yes, the last chapters were absolutely horrid. No, there is no excuse for their poor quality. The writing seemed rushed, the plot was convoluted and made little sense. It was a real disappointment after the earlier parts of the series that had shown so much promise.
Yes, I'm still continuing on. I know this series was written almost 20 years ago, and there are bound to be some problems. However, I'm still curious to see how it all ends. Maybe there will be a last-minute twist that will make it all worthwhile. Or perhaps I'm just being stubborn and don't want to give up on something I've invested so much time in.
Either way, I'll keep reading and see where this journey takes me. Who knows, maybe I'll be pleasantly surprised in the end.