By all means...live.
"A man is not old until regrets take the place of dreams" - John Barrymore
There's the saying that "age is just a number" and in many ways, it is often true. There are twentysomethings who are old souls and then there are seventy year olds with the energy of teenagers.
In life the reality is that we get older. It does not mean, though, that we must become old. Yes wrinkles may emerge, our tastes change, and our whimsical ways may slow down, but in it's truest sense "old" is a mindset, not an eventuality. Without a doubt we do change, evolve and become different, but on occassion (if we are lucky) we can end up back where we began, having the opportunity to be a beginner and see life for its vast opportunities as we did when we were children. Not once, or twice but as often as we have the desire to learn, be novices, and experience the world in new ways.
Living life means different things to different people. Do you live within the boundaries? Do you color way outside the lines? That's really up to you because truly, there are no rules. One thing I'm sure of though, getting old is a matter of how you are in this world. And this is determined by your being and your pursuits in life. It's about making decisions and embracing those choices, regardless of their outcome.
The most beautiful life is one without regrets. One in which your spirit is forever youthful. Seeing opportunitities in the challenges and being fearless in the pursuit of that which makes you feel the most alive.