Insurance is essential for everyone cause medical fees is very expensive nowadays. There are 2 insurance that everyone must have.
1) Medical Card
2) Critical Illness coverage.

BTW, you can only buy it when you are healthy. So it is advisable not to delay if you can afford it cause we do not know what will happen tomorrow.

Consider term insurance if you are on tight budget. It is cheaper but one thing about it is that you will need to pay the premium until you either surrender it or dead.
Those life insurance have dividend being paid and traditionally, you can stop paying the premium after 16 years as the dividend earn could cover the premium.