I read this when I was very young and had something like a pre puberty existential crisis. Like you, this book and the thoughts expressed therein resonated with me and it is a view of the world that I have held dearly ever since. I always liked it particularly, because it makes life a comedy instead of a drama. Nihilism is much darker and feels very depressive to me. Existentialism is meaninglessness too, but with a smile.