Maximum age to adopt?

You know, I really do "feel" young... and I'm not just saying that. I don't smoke, never have... I drink socially (and only started that at age 30). I'm in good health. Just recently I was mistaken for being "about 30" - I giggled like a maniac. My DD's godfather that I've known for 15 years thinks that I'm "33 or 34" - even though he knows I was 25 when we met. I swear, he really is a bright guy and can count to 10 all on his own. I'm waffling between another girl or boy next time - will probably just leave it up to chance. I would like to have an open adoption since I have such an open and great relationship with DD's birthmom. We will see... :)