When will Bernard Hopkins retire?

Bernard Hopkins is one of the most accomplished boxer in history and with his recent victory against a young fighter like Jean Pascal, there should be no reason to retire. 

Bernard Hopkins (52-5-2) is the oldest fighter at age 46 to become a champion by beating  Jean Pascal who is only at 28. The former record was held by George Foreman in a heavyweight title victory over Michael Moorer in 1994.  

So when will  Bernard Hopkins retire? “I won’t retire until I’m 50,” Hopkins said.

Is this a good idea?