The story is really good. It's incredibly poignant and sad (and spooky?) the glimpse into these peoples' lives that we get. Honestly just a genius work of fiction.

Shameless plug: I was inspired (because To the Moon had so much of an impact on me I guess) to make a game about exploring someone's mind and collecting mementos. It's a free web game at https://maximilian.itch.io/the-burning-locks (warning: probably not as good as To the Moon).