In games like these, money is it's own reward, and I can expect people not to be satisfied with that. In games like GTA: Vice City and San Andreas, I did all the jobs and mission and assets I could to raise my bank, and when I easily hit a million bucks, I'd revel in the fact that I could buy all the weapons I want, die, and then buy them again. I'd have so much money, I'd buy a safehouse to save just so I wouldn't have to commute to one I already had.
Maybe the "money is its sole worth thing" is a throwback to "points" in the old days of arcade, where accumulation was it's motivation and reward. I wonder what other people think of that.
Also: Yahtzee, I respect the fact you dislike multiplayer, but I'll be damned if I will abide charging for the multiplayer as an add-on; this was a terrible idea in Resident Evil 5, and I'm glad the industry has learned from it.