Incidentally, SlayerOfLight, my wife's start in life was similar to your own, her parents adopting her for exactly similar reasons you say your parents had you. So first she was rejected and dumped by her biological parents and then abused and rejected by her adoptive ones.
For the first several years of our married life we struggled together to initially get her past the huge emotional abuse she'd experienced the whole of her previous life. Then we continued to struggle to get her through the consequent damage she was still suffering many years after we had married. Thankfully those times are in our past but the emotional scars are still evident.
Some parents have a lot to answer for, a lot to atone for, in the next phase of their spiritual journeys.