Put it this way, there are two types of parent-widows; Type 1 can survive financially as a single parent, including potentially giving up work for a while to stay home with their grieving children, and then there’s the other kind.
Type 2 who suddenly can’t afford the house they live in on one salary, or lose their job as they now need to care for their children and they can’t afford a nanny, and other childcare options don’t cover work shifts/work + commute. Ones who are not only grieving and parenting grieving children, but are also thrown into poverty, sometimes even homelessness.
Life insurance helps you to be type 1, along with marriage, a will, being named as the beneficiary of your spouse’s pension and death in service amongst other things.
No one likes to prep for death, but no one wants to be homeless either.
OP, can your partner afford to work and pay for childcare and the house and bills etc if you die? If not, then yes you need life insurance.