I would if not, certainly attain a higher level of Human cognition, the experiences I would intake would be so enormous I would eventually have no room for anything new, there probably wont be anything new anyways. I'd get bored though, I would have done everything conceivable with my physical body as it travels around, but that wouldn't be enough for the imagination. I could probably train myself to ultimate fitness and actually achieve what was once considered impossible; the ability to fly.
But even so our imagination is so vast that in the long run immortality would be no more fun, we need a sense of completion, if we would live forever we would never reach an end, or a finish line so to say. It would get meaningless, too much to handle.
A person could not live by his/her ways of lifestyle forever, it would change the person and eventually become insignificant. Personally the idea of immortality is a selfish idea unless everyone was capable of it.