"Financial reasons" may be a valid concern in some cases, but certainly not 40%. Government assistance exists, and even if you don't qualify for it there are a number of institutions that offer help for mothers and families in need. You don't even have to keep the child past birth, as there are many, many couples waiting to adopt a child.
"Issues with partner" could mean an abusive partner, sure. But who would've thought that doing the child-making-act with an abusive person is a good idea in the first place? Adults are still responsible for their actions, and ending the child's life because you don't want to be bound to an abusive person you slept with is "out of convenience".
"Need to focus on other children" doesn't mean you have to end your latest child's life. There are currently about
two million couples waiting to adopt a child in the US - roughly 36 couples for every child placed for adoption.
"Lack of maturity" could be a 13-year-old, but if there are 70,000 13-year-olds getting pregnant every year in the US you should be worried.
As you start to look for the perfect family, you might have one big question: How many couples are waiting to adopt a baby? Find the answer here.
www.americanadoptions.com