Yes, this, exactly.
I do nice things for myself not because I have deep-seated beliefs that doing nice things for myself is the right thing to do, but because I feel motivated to do nice things for myself.
I'm not sure that I could avoid doing those things for myself (it might require willpower I do not have) or that I should (it might make me less effective at doing other things), or that I would want to if I could and should (doing nice things for myself feels nice).
But if we invent a new nice thing to do for myself that I don't currently feel motivated to do, I don't see any reason to try to make myself do it. If it's instrumentally useful, then sure: learning to like playing chess means means that my brain gets exercise while I'm having fun.
With cryonics, though? I could try to convince myself that I want it, and then I will want it, and then I will spend money on it. I could also leave things as they are, and spend that money on things I currently want. Why should I want to want something I don't want?
You might be able to achieve significantly better life outcomes for yourself by becoming more strategic.
I wrote an article about the process of signing up for cryo since I couldn't find any such accounts online. If you have questions about the sign-up process, just ask.
A few months ago, I signed up for Alcor's brain-only cryopreservation. The entire process took me 11 weeks from the day I started till the day I received my medical bracelet (the thing that’ll let paramedics know that your dead body should be handled by Alcor). I paid them $90 for the application fee. From now on, every year I’ll pay $530 for Alcor membership fees, and also pay $275 for my separately purchased life insurance.
http://specterdefied.blogspot.com/2015/04/how-to-sign-up-for-alcor-cryo.html