We did not choose adoption as a first choice, although I did really want to adopt! I just wanted to share my perspective, which may or may not be useful!
We have a birth child and an adopted son.Our birth child is on the autistic spectrum and much harder to parent than ds. I know this is very rare.
I did experience a lot of grief that we could not have another birth child even though I had a horrible pregnancy and birth and I wanted to adopt!
I think it is important to process all these feelings and emotions and to come to your decision after careful deliberation. We pretty much tried every kind of fertility treatment we could with me the second time around. Lots may not want that, but I did.
However, now I love and cherish my little boy and would not change a thing.
It was the journey we went on, we did what we felt we had to do, what we felt we could do, what we could afford to do, etc. And in the end we are where we are.
I do think it is important to make a choice, because there are sometimes few choices open to those of us who come to parenting later or have fertility issues etc (both of which were my situation but may not be others' situations).