Second, it costs more than they thought. The secret to a secure retirement is to start planning for it as soon as possible. That depends on your personal situation and who you ask. Don't assume a dollar today will be worth a dollar tomorrow. The need to outpace inflation is a major concern for long-term investors.
Inflation is the enemy, even when at a low rate.
The sooner you begin setting money aside for retirement, the easier it will be. Consider investments with an element of risk. Especially when it comes to outpacing inflation, stocks and bonds are the only investments that have significantly outpaced inflation over time. That makes these forms of investments appropriate for many long-term retirement savers. Don't put all your eggs in one basket.