Having a child is no selfish act. No child is asked to come into the world because there is nothing to ask, no pre-existent soul waiting for the stork. Having a child is as selfless act as it gets, considering that on modern expectations, you virtually wait hand and foot on the child for 20-30 years, suppressing much of what you may otherwise want to do in life. That's not to say that it does not fill you will enormous joy to watch your kids develop. But let's not just glorify adoption over having your own children. Adoption does not, on average, work out nearly as well, and parents of adopted children are less likely to meet various baseline standards for parenthood in part because they lack blood-ties to the child.
"Adopted Students Are More Likely to Have Trouble in School
Adoptive parents reported that an 83% majority of their children enjoyed going to school and nearly half—49%—were doing “excellent” or “above average” school work.5 But when compared to students living with their married biological parents, there were substantially more adopted students who performed poorly on indicators of academic progress and school adjustment. As the figure below shows, adopted students were:
twice as likely to have had their parents contacted in the last year due to schoolwork problems;
three times as likely to have had their parents contacted in the last year due to classroom behavior problems;
four times more likely to have repeated a grade;
and three times more likely to have been suspended or expelled from school.
On the other hand, adopted students were no more likely than other students to be absent often from school (for 11 or more days during the school year)."