Haha I would put both of those at the top of my list of movies that were actually much better than the books.

Do Androids Dream of Eletric Sheep felt so flat to me, I think it probably didn't age well. The animal obsession didn't land for me, I guess it's supposed to be an allegory for material obsession, since the animals are more for showing off than being actual pets, but it just seemed to slap you in the face with it like many of the very not subtle metaphors. The main character is also just dull as hell and walks straight into dangerous situations or traps without a second thought, but it always works out for him because plot armour and the androids either just comply for some reason or they're so incompetent that it doesn't matter. It wasn't a fun book imo and it's themes were so obvious that it didn't "make you think".

Starship Troopers (Book) was just hoorah military propaganda. The movie did such a good job of making fun of it and turning into a ridiculous over the top satire.