I tend to keep pretty good track of what is going on with our finances for the most part. My wife does pretty much everything through my accounts, so I get alerts anyway. It's nice because she actually prefers it that way, so it isn't like I have her under my thumb anyway.
I think it is good to share the load, especially if something happens where one becomes incapable for some reason. I would want my wife to take some interest, but it seems there isn't enough value for her to do so. If we divorced, does that mean she isn't interested in half? ;D
I try to keep her up to date on what is going on. I think she appreciates that, but she just wants to know it is being taken care of.