Sure, and this is a fairly westernized group.
When people ask me, I say from the day you throw out the birth control until either the kids are self-sufficient or your assets are sufficient to cover their remaining financial needs.
For a lot of families that would roughly correspond to the youngest child turning 22 or so. Even if there is no expectation of college it’s fairly common for 18-21 year olds to live at home with their parents either for free or for below-market rent and board.
That’s not a hard & fast rule or anything, but a decent rule of thumb for the financially illiterate.
American families, in my experience, tend to either grossly overestimate or underestimate their insurance needs. Most aren’t aware of the existence of Social Security survivor benefits, which can be considerable. And they are tax-advantaged too.
For example, suppose an actuarial type (or anyone making over the Social Security cap of $142,800) with two young kids and a non-working spouse:
Each kid would get $2,549.20 a month until they turn 18, and the spouse would get $2,549.20 a month until the youngest kid turns 16. That’s $91,771.20 a year, tax-free. Which will go a long way towards maintaining standard-of-living.
ETA: Family maximum is lower than I realized, so the above family would get something closer to $70,000. My apologies for the error.
But that does start to decrease sooner than the kids are going to be self-sufficient, so you probably want some life insurance if you want your family to maintain their standard of living (which most of us do). And if the spouse intends to stay out of the workplace then that would further increase the amount of life insurance needed to make that a reality.