The need for life insurance is something I've always stressed to the folks I work with. Especially the younger 20 year olds that are already married with kids. The younger you are when you get it, the cheaper you lock in your rate for term life.
When my brother passed away in 2006 at the age of 45, I saw first hand how important life insurance was. He was married and had a 15yo daughter and a 19 yo son. His wife worked hard, but she barely made minimum wage and certainly wouldn't have been able to sustain the house and kids. My brother had a $100K policy through his employer. That money helped buy her some time to make arrangements for selling the house and moving on with her life. It also provided some financial means if she wanted to get some schooling/training to help her job prospects, same as the kids. It wasn't a lot of money, but it certainly was better than nothing, without it she would have defaulted on the mortgage and been in dire straits in a hurry.
As some others have said, you need to look at your (you and Karen's) situation. Fortunately, you both have a sustainable income (both could make it on your own) and you're kind of in the same situation as me and Shellie. We looked at what it would take to leave the other debt free (house paid off and kids through college in our case). We decided on $250K term life policies. This is probably low and I wish I went with $500K minimum, but we both had decent retirement and brokerage accounts, so our financial burden was low.
The only drawback I saw to having a huge insurance policy, is that I'd have to start sleeping with one eye open if I ever pissed her off.:laughing: