Today we are living in the age of computer. Things are moving faster. So we need to think faster, act faster and take decisions very quickly. You might be 30 years today but you would not know how fast life is going, with marriage, family etc and tomorrow, it will be time for retirement.
So retirement is not something that happens to only few individuals but to everyone. At some point in life you have to retire and be prepared for it.
For retirement, you have to have enough funds in hand. If not, start thinking today itself.
The earlier the better.