Rather selfish? We'll have enough problems in the coming decades with geriatric baby boomers, you now want to give people the option to live forever?
You're thinking immortality would be a problem given the current conditions. But the conditions will be different in the future. The same will be true for food production, which should be vastly more efficient in the future, and enough to feed everyone.
Secondly of all, one of the problems with the baby boomer generation was just the "boom". The growth was not continued/sustained.
Thirdly of all, I figure with people spending proportionally more of their lives in a field instead of in school, plus population pressures, we'll figure out how to colonize other planets pretty quick :)
I'm sure that it's trivial to answer and has been answered a million times.
The cultural issues could be pretty huge if women are only fertile for a small fraction of their life and dudes are fertile for X times as long as women. Or maybe it becomes a cultural "job" of young people to churn out kids as fast as possible for old people to raise them, which we seem to already be implementing in certain socioeconomic classes.
Not sure if this is 100% true but "It had been widely accepted that a woman was born with a limited number of eggs [...] But, in 2012 this dogma was challenged in a paper that found proliferative germ cells that sustain oocyte and follicle production in the postnatal mammalian ovary. This means that women do not have a limited number of eggs."
disclaimer: my wife and I have spent about $100K over the past 6 years trying to get pregnant, including several IVFs and a failed donor cycle (that's where you write a check for $30000 and flush it down the toilet).