How to get to 10 trillion people in this solar system?

--- In spacesettlers@yahoogroups.com, "Lucio de Souza Coelho"
wrote:
>
> I rather believe the selfish explanations being discussed than that
> altruistic one.
>
how many childless couples do you know. i know 5 couples. all are of
the opinion that raising children will just lead to the children
suffering in the future. they choise not to have children. none
choise to not do so for reason of money.
>
> Even if there is a raise in the infertility rate among humans
(which I
> doubt), we have also the technology to produce children in vitro,
> stimulate ovulation with hormones, etc, so if infertile couples
*want*
> to have children they can solve most of the infertility cases with
> modern medicine.
>
yes and in stations of the future, it might be cheaper to do so,
cheap enough that those who need it can get it.