No, it's not a con. It's insurance, just like house and car and contents etc. you may never need it, and then that's awesome. If you do, then yay for having it.

It can be very very cheap really. I pay (seriously, its cheap ) $3.30 per fortnight through a super fund. It's about 200k of cover (it goes up with inflation, hence I'm not 100% sure).

DH would hire a nanny, or move overseas to live near family or whatever if I died. He'd be able to spend a few years grieving his lovely wife without stressing over bills.

ETA I got it when we first bought a house. The mortgage was big and it only seemed fair to have insurance to cover it if one of us died. We had kids after the house purchase, but I'm sure having kids would have been the next trigger to getting life insurance.