challenging emotional reflective sad

The writing style of this book is not my of tea but over all I did enjoy this book. I'm rating it a 3.5. Also what ever happened to his sister being pregnant?
emotional funny hopeful sad fast-paced
Plot or Character Driven: Character
Strong character development: Yes
Loveable characters: Yes
Diverse cast of characters: N/A
Flaws of characters a main focus: Yes

i wish i could be charlie’s friend
emotional reflective fast-paced
Plot or Character Driven: A mix
Strong character development: Yes
Loveable characters: Yes
Diverse cast of characters: Yes
Flaws of characters a main focus: Yes
adventurous challenging dark emotional funny hopeful inspiring reflective sad tense fast-paced
Plot or Character Driven: A mix
Strong character development: Yes
Loveable characters: Yes
Diverse cast of characters: N/A
Flaws of characters a main focus: Yes
slow-paced

Also idk, iwie hab ich gar ned gecheckt um was es ging aber trotzdem war es irgendwie gut. Also kein plan aber war schon deep und verständlich aber what the point?
dark emotional hopeful reflective sad tense medium-paced
Plot or Character Driven: Character
Strong character development: Yes
Loveable characters: Yes
Flaws of characters a main focus: Yes
medium-paced
Plot or Character Driven: Character

Not only was I bored throughout I also thought the book didn't take itself seriously enough for me to enjoy it. It was far too callous about the heavy and sensitive topics the author chose to include in it. I understand how for the early 00s this was a shock or something new/important enough to be a cultural pillar but to me, it just doesn't hold up now. 

I did like the story being told through letters though, that's one of my favorite writing styles.