Probably 30! I couldn't wait to be 30 when I was younger (and age older than pre-adulthood and younger than midlife).
I'm 30, but sometimes I feel like I'm 40. Thankfully I look like I'm 25 though .. Estee Lauder all the way! lol Stress and work and hardships and trauma can not only take over your mind, but also your body and it makes you tired, migraines, and pain. It's horrible .. and I don't even have kids yet!
Probably 10 
This question makes me sad. I used to look young for my age and had the energy to match. I feel like I've aged so much in the past 5 years. I feel like I have the energy levels of a senior - and not the energeric ones.
I have no idea, to be honest. I just turned 20, but part of me is still a child, while the other part of me is already aware of adulthood. I'd still stick with my age, haha
I'm 48 going on 16 lol ,bring it on I love life
Probably 30-40
I would be 27!
i would either be 4 or 76 sometimes
30