Yeah, the Lost ending definitely was a massive letdown and sparked a lot of debate. It just didn't live up to the complexity of the rest of the show, IMO. The journey, though, with the rest of the show was an incredible ride with all the mysteries and character arcs. That was the first show my wife and I ever binged. It was on Netflix and we would be up at midnight on a work night, an episode would end, and we would look at each other. "Ok, one more!!". haha Good times.
We made it to season 5 and then had to watch season 6 on TV, week by week. That sucked.