It does take two to raise a child, and then the whole community. I have one child who chose not to have children because of the way the world is, and then another child who is blissfully happy with her first son. She is in her late thirties and waited in life to have child.
If you are already caretaking, I wonder if your ability is there. Your desire for a child may be, but can you do a full time care for a child in the circumstances you are in? I am adopted, and grateful for that. I had fantastic folks that adopted me while in their early 40's. My mom couldn't have kids so they opted for me. There are lots of toddlers and children who would love to have a home. Take your time in your decisions, it is a life time commitment, and it never never ends. I think it would be very hard to be a caretaker for two, no matter how much love there is, there is only one of you. I wish you all the best and I hope you find the solution that makes your life more complete. ginnie