Just finished that myself a couple of hours back.
Didn't care for it at all. Privilege making fun of the world of privilege he was happily luxuriating in.
I can understand what you're saying, not just about this book, but about Waugh in general. His unpleasant personality and snooty misanthropy, do tend to bleed into his novels.
20th century literary masterpiece as far as I'm concerned, and my favourite book by Waugh. Yes, he was a very unpleasant character - I've read a biography - but he produced books of superlative literary merit. There's a very serious and tragic undertone to Decline - I'd call it a satirical tragicomedy. And, Bev, if it hadn't been for the opening passage of this book, I wouldn't have realised the significance of our leaders' Bullingdon Club membership when the media got on to it a few years ago.