If I'm immortal then I don't think any amount of investment or savings will cover me to retire at 50. And I've got to say, after the first 200 years or so of showing up at the office, I'd have to seriously consider eating the barrel of a gun.
Besides, I love my wife but at some point I'm going to be looking at that 238-year-old woman I'm married to and thinking, "Goodness I could go for a 20 year old right about now."
I'll just keep my mortality.
Reconditioning ourselves for immortality?
Gotta get to heaven at some point.
BTW- What makes you think your wife will want to keep a 233 yr old man around anyway?
I don't think anyone is going to force you to take longevity treatments so don't get too anxious.