Anyone man can be a father (sperm sonar). A dad is always there for you offering, support, guidance, and unconditional love to either there son or daughter. A stepfather can often turn into the daddy role, especially of the real dad doesn't want to be a positive roll model their children's life. Takes a special man to be a good daddy. I know you will be Alva.
A Dad is someone who loves you. He may disagree with you or disaprove of the things you do, but he will alway's love you. A Dad will try to be there for you in every way possible, and he'll feel really bad if he can't.