Well I think that's kind of unfair.

I talk to my husband too. But sometimes we talk when we're in the middle of doing something else, or when DH who hasn't quite mastered the whole portable calendar thing is away from his computers, and the talk-ee forgets to enter the information on his/her own calendar. Why not have a shared database?

(Personally I have issues with the security of a free online calendar, and to me the "old fashioned" and more secure way is to send vcard invites even when it's not really an invitation but just a reminder of something that you're doing on your own. But in general it seems like a good idea.)