I'm not sure it's a utopia. An increase in longevity coupled with an increase in age at which you have kids would put enormous pressure on government welfare systems. Actually, this is already happening in many places in the world--Europe, Japan, Taiwan... China, with their one child policy will be in a very tight spot much sooner than might be thought as well.
Besides these more direct effects, I wonder what other unintended effects mass-increased longevity would have. Imagine everyone retiring around 75 instead of 65, 30+ years of retirement instead of 20. The younger generation, either through private sense of obligation or government taxes are going to be facing a huge burden. With that kind of economic burden, there may be even less incentive to have children, especially at younger ages, and thus even fewer tax payers to support the retired masses. At the same time lot of the jobs that would've been available to younger rising stars remain occupied by a group that is retiring later and later. So there would be a squeeze on both the expenses front and the income front. For an individual, especially if you could _expect_ and _plan_ for a longer life, it may be individually fulfilling, but on the whole, I'm not sure that it would result in some kind of ideal society, especially in the transition.
Besides these more direct effects, I wonder what other unintended effects mass-increased longevity would have. Imagine everyone retiring around 75 instead of 65, 30+ years of retirement instead of 20. The younger generation, either through private sense of obligation or government taxes are going to be facing a huge burden. With that kind of economic burden, there may be even less incentive to have children, especially at younger ages, and thus even fewer tax payers to support the retired masses. At the same time lot of the jobs that would've been available to younger rising stars remain occupied by a group that is retiring later and later. So there would be a squeeze on both the expenses front and the income front. For an individual, especially if you could _expect_ and _plan_ for a longer life, it may be individually fulfilling, but on the whole, I'm not sure that it would result in some kind of ideal society, especially in the transition.