I can understand people wanting a 30 or over forum, but how are you going to determine who's of what age?
I am on the younger end of the spectrum and value an older members opinion as much as someone my age.
Its amazing how a 20 year old analyzes a situation and how a 40 year old analyzes it. Two different opinions, but both are rational and legitimate.
It doesn't really matter to me, because I stay out of topics with kids and divorce for the most part anyway. The last thing I want is a spawn of mine running loose in the world right now to begin with.