I think about this sometimes, but I don't know how it could be done in the next 200 years. It's possible I guess, but even if someone found a way to make it possible, I seriously doubt the medical industry would allow people to have immortality, without also having health problems that need fixing at the same time. To borrow @Hollowillow 's metaphor, the newly immortalized generation would be kept trapped under a rock forever, always with crushed limbs in need of fixing, just because there's profit to be made there, and what good would immortality be if you could still suffer hardship?
I do sometimes wish I could be immortal, but it would have to come with the added benefit of never having to eat or sleep again, never feeling any kind of physical pain or illness again, and it would have to be possible for me to delete painful memories that haunt me so I can forget them forever. Perhaps if I was an android, with a brand new body, it could work. If not, then at least I wouldn't have to worry about suicide methods being painful if I wanted to turn myself off. I could just pop out the battery and power down. The end.
Now that my physical health is starting to go downhill, after my mental health crashed and burned a long time ago, I'm closer than ever before to being ready to check out. There will probably always be a part of me that's afraid to do it, which is why I was interested in this thread. Once the idea of suicide becomes less terrifying than living, then I'll know it's time, but right now they both terrify me equally.