When you are young your rate will be low because the cost of life insurance is based in part on how long you are expected to live.
For example, if you buy a whole life insurance policy, the cost is very low for young people and the cost never increases. That becomes very important over time as the cost of life insurance rises considerably as a person ages.
Locking in your life insurance rate for as long as possible may be an important issue in the future.
In addition, term life insurance is the lowest priced life insurance and provides guaranteed level rates for up to 30 years. If you have a need for protection of 30 years or less, term life may be a good option for you.