A long time ago one used to be able to count on domains having addresses like [email protected], [email protected], or [email protected] ... is this convention dead?

Note: I always try to make sure to make a contact available on the websites I put up, so people can contact us if necessary. But are there reasons to handle these or other "standard" email addresses I might not be thinking of? I set up less email addresses than I used to since spam got so awful, and a "predictable" email address just seems to be an invitation to the lousy spammers.