According to a new study, the moment when grumpiness kicks in for men is around age 70.

 

Researchers found that as men grow older – from age 50 or so – they have fewer obstacles and annoyances to worry about in life and are pretty much able to deal any bad stuff that actually pops up.

 

But around age 70, life – or their perception of happiness – begins to go downhill … and guys become grumpy old men. (DailyMail)