A birth father may also reflect attitudes which are common in our society and which cause him not to consent. There are many people in our society who believe that adoption is always a bad thing because it terminates the legal relationship between a child and a birth parent. They believe that this relationship is somehow always a good thing for the child. Also, a growing percentage of our population are comfortable with out of wedlock births and children being raised by relatives other than parents. That may have been their own experience and the experience of other friends and family members.
Many birth fathers claim an intention to parent, but never follow through. Many refuse to execute the Consent due to an internal struggle. This struggle may be irrational, but that does not mean that it is not real. They just cannot bring themselfes to do it. They cannot think rationally about what is best for the child because of their own emotional needs. I have known many birth fathers who thought that the law should force the birth mother to raise their child, even though they have no intention of helping her in any way.
An experienced adoption attorney will be familiar with the various behaviors of birth fathers and know how to approach them on behalf of their clients. It is important to treat them with courtesy and respect, despite their behavior.