I would adopt almost any age (depending on the attitude of the child.) I often feel really bad because u hear about teens that won't get adopted because everyone wants the little kids :(
I don't think I'd be able to handle that sort of responsibility..besides, I've heard so many horror stories about people regretting adoptions. Thing is you can't send your own children back (once they've been born that is..) but if the kids not yours, your not really expected to love it as much...(not yours) If I had to, I'd accept at any age, but I'd feel a bit iffy about it regardless.