Yes. And if I had life insurance, I don't see why I wouldn't sign that over to the same organizations I donate to, since the cost is not the monthly dollar figure, but the amount spent on the process. For $150,000, you can preserve one failed human body with a low chance of success, or you can fund existential risk research for most of a year.

If I were some kind of perfect utility maximizer, I would be able to cut out all the non-essentials, but I have akrasia more strongly than I've heard it stated by anyone else on this site. I can actively look at a situation, say to myself, "Y is wrong. It will hurt me, it will hurt the other people involved, and produces no good in the foreseeable future. X is better in every way." And then I take action Y. If I were a theist, I'd say I was possessed, as I walk down the sidewalk ranting at myself, "What are you doing?! You know it's wrong! You don't even want it! Why are you doing it?!" on my way to do Y.

I take my victories where I can get them. I consider the value equation to be very rational - existential risk is far more important than one life. The possibly rationalized part is where I don't do both to mitigate uncertainty. I can see this as potentially a form of cryocrastination brought on by low self-esteem. I can also see it as counteracting the abnormally large emphasis we place on our own continued existence, bringing the value comparison more fully into view... it's just a good thing not everyone feels that way.

That's for term life insurance that becomes worthless if you don't die within a specified time period. After that time period, if you don't have $50,000 in the bank, you'll have to pay a much higher premium because you're older.