If you don't work right now, then I can't see much point in getting that kind of insurance. It's designed for people who have large commitments (e.g. mortgages) who wouldn't be able to cope on a reduced income or benefits if they suddenly developed MS, had a stroke or were hit by a bus. You are already coping just fine on a reduced income, so what would be different?
Life insurance is a really good deal, as it will pay out a lot more than you put in (on the assumption that you won't die young). If you don't die within the term then you get nothing, but that's the whole point of insurance, in my opinion, to cover you for things that you couldn't possibly deal with yourself. Ours will go until DD2 is 21, after that we reckon that they should be OK to look after themselves if we both go.
Otherwise, it's better just to save up a bit of money to act as a financial cushion, as then you'll get the interest on it. It does take a bit of discipline, but I have a standing order into a savings account on the day that our money goes into our account - if we don't ever see it, we can't spend it!