No child may be adopted without the consent of the child's parents. However, if it is in the best interest of the child, the court may waive consent from a parent or putative father who:
(1) Has been convicted of any crime punishable by imprisonment in a state correctional facility for a period that, in the opinion of the court, will deprive the child of the parent's companionship for a critical period of time;
(2) Has, by clear and convincing evidence, abandoned the child for six months or more immediately prior to the filing of the petition;
(3) Has substantially and continuously or repeatedly neglected the child and refused to give the child necessary parental care and protection;
(4) Being financially able, has willfully neglected to provide the child with the necessary subsistence, education, or other care necessary for the child's health, morals, or welfare or has neglected to pay for such subsistence, education, or other care if legal custody of the child is lodged with others and such payment ordered by the court;
(5) Is unfit by reason of habitual abuse of intoxicating liquor or narcotic drugs;
(6) Has been judicially deprived of the custody of the child, if the adjudication is final on appeal to the court of last resort or the time for an appeal has expired;
(6A) Has caused the child to be conceived as a result of rape or incest; or
(7) Does not appear personally or by counsel at the hearing to terminate parental rights after notice pursuant to §§ 25-5A-11 and 25-5A-12 which was received at least fifteen days prior to the hearing.