Fate/Stay Night is incredible, I really don't understand how people can say it's convoluted when all you have to do is read the visual novel.
Anyhow, something I really like is how Shirou is written with his survivors guilt manifesting into his hero complex and all that, but it's not like Nasu is saying you shouldn't want to help people or that feelings like that are stupid, what he's saying is that you mustn't desire to sacrifice yourself.
Fate/Zero is garbage though, Gen Urobochi is one of the biggest hack frauds to exist in this industry and any other.