Many times I have thought about the concept of immortality. I weigh up the supposed cons against the pros and the pros always win.
One would get to become fluent in every language, read all the books of the world, become proficient every skill they desired, meet beautiful and unique people, guide people down the right path. With this knowledge one could teach humanity some valuable lessons. They would be able to watch humanity grow and falter.
Outliving all of the people you know is a small price to pay in order to gain something so wonderful. Of course, you should remember that this is an opinion and you can argue with me on this.