Damn dude, you're really not willing to figure out ANYTHING for yourself are you?
jag, i think you are too hippie for me to understand. i don't how you argue logically that adoption isn't a solution to the unwanted baby question.
Suppose you want to double the number of babies adopted, and possibly reduce the abortion rate. First, you would have to give women an incentive to continue with an unwanted pregnancy-- like good prenatal care, an income if they can't work, help with other children, etc. That costs money-- most likely from taxes that you have already stated you don't want to pay.
Second, you need to start more adoption agencies and/or loosen up the regulations currently preventing many people from adopting. There are laws in some states against gays adopting; some people don't even want atheists to adopt. Traditionally, church groups only let their own members adopt the children in their charge. If you want there to be lots more adoptions, that all might have to change.
Regulations in many countries are pretty strict on adopting babies, because of the potential for fraud and abuse. You would not a fly-by-night organization recruiting poor pregnant women in Ukraine or Mexico or Nigeria and tricking them or paying them to give up their babies-- or even kidnapping the babies outright, knowing the women have no legal recourse.
People could lie to women, saying they would still have legal custody and be able to visit the child, which may not be the case. Or telling the women that the child will be able to sponsor them for US citizenship, which is also not the case. You would not want babies brokered to child prostitution outfits. You would not want people adopting a bunch of kids and putting them all on welfare as a business model.
All these things do go on, even with the regulations and laws we have. If you loosen the regs or let more people enter the adoption "business", there will be even more of this stuff. So, you can propose a policy, but if you don't think about the real-life consequences, you are just....flapping your gums on the internet.