"A recent study of more than 2,000 people aged 18–60 found that on average cognitive abilities were best at age 22.Experts say that the 22nd birthday marks the end of bickering and bust-ups, which begin during teenage years.People start appreciating their parents once they turn 22, according to a survey by market research firm onepoll.com"At age 22 I have all the reasons to say I'm a happy dude! And it's not about fashion... and more.....