The Scientific study of changes that occur in people from conception until death

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In Psychology, Human Development covers the lifespan from conception to death.

It is interesting how much variability there is across people in terms of their views of getting older. Some fear it, others only dread it, others look forward to their easy-going retirement years, still others ignore the idea completely (etc.).

In 1994, Miss Alabama was asked the following question during the Miss USA contest:
If you could live forever, would you, and why (or why not)?

To which she answered:

“I would not live forever, because we should not live forever, because if we were supposed to live forever, then we would live forever, but we cannot live forever, which is why I would not live forever.”

Rather than ask you whether you’d live forever, let’s change it a bit. If you were given a little box with a red button on it that, when pressed once, would stop your aging process and when pressed again, would resume the aging process, would you use it? (Assume that you can press the button as often as you like, AND, it only works on YOU, nobody else.) If you think you’d use it, how long do you think you would live until? If you wouldn’t use it, why not? (Please feel free to elaborate upon this question as you see fit.)