there is a really long thread on this already but here is why we will never carry it even prior to FI after we have kids.
1. we'll have over 500k in invested assets when we have our first child.
2. go make an SSA.gov account for you and your wife you'll be surprised to see how much money your spouse will receive after you die if you still have a kid under 18 - for me its around 48k a year for her and our unborn child - for her its around 40k for me and our unborn child
3. we both work and are capable human beings i dont expect either of us to not be able to support our lifestyle if the other were to die. see no. 2 above for more proof. if one of us croaks - we're FIREd basically. esp when you account for No. 1.
4. our places of employement give 1 - 2 years salary as life insuracne so there is another 100-200k
really though its number 2 most people dont know about or consider at all.
i didnt even know about it til the last thread like this and even then i was strongly considering not caring life insurance.
Those are some big survivors benefits, are you sure the #'s are right? I must be looking at a different SS program. I thought the kid had to be under 16, and you would receive 75% of the dead spouses expected SSI benefits. If that's your benefit amount you definitely don't need insurance. Assuming you're at least a little Mustacian, and it sounds like you are, that should be enough money to pay all bills while the child is being raised, while allowing your other investments to continue to grow, without the surviving spouse needing to work.
When Term makes sense to me is when the couple has a child or is about to, and one of their major priorities is to have one parent stay home to raise the kid. In order to do that, the 2nd parent is going to have to have an income. If any one parent dies, the 2nd parent stays home to raise the kid, and there's no more income. Term life insurance provides that income. In the event of death of one spouse, the survivor could presumably go back to work or continue working, and pay for child care. That would require a change in priorities though, and assumes that both spouses are capable of making a good salary (not always the case, even among this cohort).
ETA: You're also insuring against the unknown (beyond the risk of death of one spouse). Whether you'll really be able to continue working and pay daycare, or if you will be more inclined to stay home with the child, is something you can think about and plan ahead of time but which may change if you are actually in that situation. You may become injured or disabled in a way that makes it difficult for you to produce the income you expected to, and that could mean a financial bind w/o the help of a spouse to help out with additional income.