I think the biggest issue I had is that Han and Leia’s story was over. Finished. When you write a story, or film one on screen, you have characters, and these made-up characters in theory have entire lifetimes of events. But story is about finding only the most relevant period of time in their lives, the most interesting events, and only getting into all of that. Nobody cares what they ate for breakfast yesterday or what they did at band camp when they were 10 years old unless it’s relevant to the story.
If you think the figurative death of a child and what that does to a couple is analogous (at least, from a drama standpoint) to what they had for breakfast, then yeah I can see why you wouldn’t like TFA.