wilder, you're definitely missing the point 100% by focusing in on the birth announcement aspect of this. andy makes a highly valid point to ask
where do we draw the line distinguishing between the trivial and the important.
as it stands, i agree that it's an abuse of the system to make personal announcements here on the forum
i made my announcement with the complete awareness that it would probably wind up closed. that's still very likely to happen and i would have no room to complain about it. but i, personally, would have been satisfied even if the thread had been closed before anyone had even responded to it.
i'm sure most of you are familiar with the phrase "posting the bans" with regards to the announcement of a birth, marriage or other positive personal milestone. the phrase refers to a time when these events were communicated to the general community by literally posting a banner or poster in a public area. there was no invitation of discussion and any congratulations had to be relayed privately. people didn't go around responding to these announcements by writing on the bottom!
that sort of tradition is what i have in mind when i suggest a subforum where there are no replies. if you want to offer your congratulations, then you can send a private message. if you don't agree that someone's announcement is meaningful, then you can just not look or you can send them a private message in response. if the mod's see a post that appears to be facetious or otherwise inappropriate, then they can delete the thread just as they do in the regular forums. but i don't see the need for debate in every single instance. sometimes its nice just to be happy or sad for someone and allow them to experience the emotion that they want to experience.
--EDIT--
andy, i think you should have kids because otherwise the numpties will outnumber us in twenty years time. make your genetic contribution to the cause!