"bond trader" could mean a lot of things, but if he is a proprietary trader for the bank the last thing you want is people who are risk averse. Most successful traders are in fact risk seekers.
I believe that young people who are decades away from retirement are advised to invest in stocks -- a little risky, but good growth potential, and you have time to make up any losses which occur.
On the other hand, people who are just a few years from retirement should shift more money into bonds. They are less volatile. With little time to recover from losses, older people should think about reducing risk.
I suppose traders of all stripes have to be risk-taking individuals, so maybe a lot of bond traders run with the bulls and engage in base jumping. It seems a little incongruous to me, but what do I know?