I have pretty much everything of Niven's; got hooked about when I was 13 or so. Later came to realize that his occasional collaborator, Pournelle, was 10x a better writer.
Niven is just...hysteric? Is that the apposite word? He's from a rich family and never worked a day in his life, so much of his material reflects that. Pournelle nearly pulled off a coup in Albania, ffs.