The recommended age and optimal age that you should get life insurance is any age before you turn 35 years old.
However some people that age cannot afford life insurance so some people don't get life insurance until past age 35 or older.
My father and mother didn't get life insurance until they were in their 50s which is okay.
But the longer you wait to get life insurance the harder it can be to get the life insurance due to your age and health possibly going downhill.
However if you keep active and get plenty of exercise and keep your weight down you can have hopefully better health as you age.
You really only need life insurance if you have people who depend on you and need your income to survive.
I thought about getting life insurance but I decided to just use the money to pay off debts so that my family doesn't have any huge bills to deal with and I will prepay my funeral costs.
However if you have dependents and a lot of debt then getting life insurance would be worth it but I would recommend getting term life insurance so that if you're still living at the end of the term life insurance you can cash out the policy on yourself and use the money to spend as you wish.