I do not accept the fact that conditions that prevent people from attaining their eternal destiny were born into them without any ability to control. That is contrary to the Plan of Salvation, and it is contrary to the justice and mercy of God. It's contrary to the whole teaching of the Gospel of Jesus Christ, which expresses the truth that by or through the power and mercy of Jesus Christ we will have the strength to do all things. That includes resisting temptation. That includes dealing with things that we're born with, including disfigurements, or mental or physical incapacities.
The ultimate defining fact for all of us is that we are children of Heavenly Parents, born on this earth for a purpose, and born with a divine destiny.
To achieve our eternal destiny, we will desire and work for the qualities required to become an eternal being.