It's nice to know that I'm not the only person who hated Old Man's War, though our reasons might be different.

It's been a while since I've read it, but I think the character who came out in favor of an infrastructure attack (was that the genocidal war?) turned out to be wrong.

What I didn't like about the book was largely that it was science fiction lite-- the world building was weak and vague, and the viewpoint character was way too trusting. I've been told that more is explained in later books, but I had no desire to read them.

There's a profoundly anti-imperialist/anti-colonialist theme in Heinlein, but most Heinlein fans don't seem to pick up on it.