You have been blessed; however, with the best will in the world, parents can be short-changed
and so can children. We must remember that our kids are separate people and through no
fault of the parents they can go astray and give grief. If you are a good parent, well,
of course the chances of rearing good offspring are good but sadly not guaranteed. I do
accept that it all worked out for you though.

Much of it worked out. I suspect that every life is a 'mixed bag'.
Individuals have the right to choose not to have children. I'm glad I chose to have mine; they certainly changed my life and myself.
Someone who does not have children CANNOT understand the value of the experience, though they may observe the investment cost.