Right now, there's virtually no evidence that cryonics works. If I wanted to spend money on something not proven to work, I could do it much more cheaply - I bet someone on the street outside would happily sell me an immortality potion for like 5 bucks.
It makes a lot more sense to me to spend my money on things that will make my life better, for reals.
Vitrification works in organs. Neurons are being simulated in software. Stem cells tech is improving. We already pretty much have the electron-microscope and chemical assay tech to dice, slice, scan and digitize a frozen brain. We don't yet know exactly what to digitize, but neuroscience is a heavily studied field.
The fact of revival isn't here yet, but the peripheral evidence is strong.
My girlfriend/SO's grandfather died last night, running on a treadmill when his heart gave out.
He wasn't signed up for cryonics, of course. She tried to convince him, and I tried myself a little the one time I met her grandparents.
"This didn't have to happen. Fucking religion."
That's what my girlfriend said.
I asked her if I could share that with you, and she said yes.
Just so that we're clear that all the wonderful emotional benefits of self-delusion come with a price, and the price isn't just to you.