Hi Richard, welcome to MB.

umm...err...i don't mean to sound cynical...but i have to say it...what are you selling? LOL
What do i see wrong with this goal? Teenagers

if i were to live 1000 years i might have more Teenagers and i'm tellin ya 2 is enough!!!
But seriously it all depends on weather i would be old and wrinkled, arthritis, rheumatism (and all the other sicknesses & pains that come with age) for 950 of these years or not.
Or if i could stay youthful and learn all the things i want to learn about during this time, will i hate losing all my friends and loved ones (my children and grandchildren) long before i die myself...have you seen the moivies Highlander or coccoon? Some of these ideas (to do with living well beyond average human expectancy) are played out on these movies...so i'm not entirely sure i would choose this option (live 1000 years) even if it were possible