Let's pretend that you are making a family tree. A very small family tree that only goes back 3 generations. Something like this:
Now let's pretend that your biological father was not married to your mother, and you didn't meet the man until you were 19 years old. Your mom raised you alone until you were 4, and then she married your dad, who formally adopted you (and was sealed to you in the LDS temple.)
But in the last 5 years, you have grown closer to your biological father than you ever were to your adoptive father. And consider that your biological grandparents (who, again, you have only known for 5 years) have been more supportive and amazing and...grandparent-like than your adoptive grandparents, who basically shunned you because you were technically illegitimate and also not of their race and who knows whatever other reasons they had.
So. You only have space for one male parent. You love and respect both of them, but your relationship is somewhat strained with both of them. Which one do you put on your tree? Or do you give up on the tree idea and go ahead and design a family shrubbery to display? Because I'm starting to lean towards that.
In other news, my brother was just called to the Perth, Australia LDS mission. He reports to the Missionary Training Center on February 29, 2012. I am so proud of him, and incredibly excited for him!