I have also come to realize buy earlier is better because you accumulate some hocus pocus something statement is not 100% true. There are many sections of it.
You accumulate more funds, true. You accumulate more Cost of Insurance within Insurance company to make them give you more tolerance of premium increase? Absolutely NO.
My friend who is same age with me, had premium increase notice of about 100%. And the oddest thing is Medical plan remain the same. He later found out that even buying new plan from the same company, with 80% higher premium can get Medical AL 150k to 1.5mil. And Lifetime still unlimited.
Note: from reading replies in this thread will need to check coverage projection is up to 70 to 80 years old.