The options that can be used for investments are different for different age groups. For example a person in his 50s should invest more in bonds and a smaller percentage in the equity market.
Over a long period of time, the equity market yields are higher than those of the bond market and the level of risk is also very less. As a young person you can therefore invest a larger fraction of your investments in the equity market and other assets riskier than bonds.
Each person has has to prioritize based on factors that are unique for him/her. What is perfect for your father may not be the optimum choice for you.