The best life insurance...
...is the kind that keeps you alive.
Today as I read my friends list here I read of a close call with gas and carbon monoxide. My sister and her housemate once also had a close call. Her housemate wasn't feeling well, had a nasty headache, felt tired while in the basement. A fellow ham radio op (KA9SRO), years ago, had a similar incident. Each of these cases were extremely lucky in recognizing they were affected and someone having enough sense left do something about it. These are actually exceptions. Had the problem started late in the evening, the only news might have been from others when the afflicted didn't show up someplace because they never woke up.
Smoke detectors are common. Chances are most people wouldn't think of living in a place without one. Carbon monoxide detectors are available. They are also inexpensive. If you don't have one, go get one. Not whenever, but the very next chance you get. Spend the money, it isn't much. That other thing can wait.
Regular life insurance only pays off if you die. Why not get some that keeps you alive?