JOEL - No, but God knew you would be a "punk" once you got here, so He made you wait around on earth for a longer time to prove yourself worthy to return to him :-)

Joesph Fielding Smith said:
"Satan cannot tempt little children in this life, nor in the spirit world, nor after their resurrection. Little children who die before reaching the years of accountability will not be tempted; those born during the millennium, when Satan is bound and cannot tempt them, "shall grow up without sin unto salvation."(D&C 45:58)

These children will never be tempted because, for some reason that only God knows, they don't need it for thier salvation; they only need a body. We need to rest secure in the knowledge that God knows what is best for each of us, be we child or adult, and that He will bring to pass those conditions that will maximize our growth and further our opportunities for exaltation.

Joseph Fielding Smith also said:
"We must assume that the Lord knows and arranges beforehand who shall be taken in infancy and who shall remain on earth to undergo whatever tests are needed in their cases." (Joseph Fielding Smith" The Salvation of Little Children," Ensign, April 1977, p. 6.)

Joseph Smith Jr. asked the question, "Why is it that infants, innocent children, are taken away from us, especially those that seem to be the most intelligent and interesting?"
His answer was;
"The strongest reasons that present themselves to my mind are these: This world is a very wicked world; and it is a proverb that the 'world grows weaker and wiser'; if that is the case, the world grows more wicked and corrupt. In the earlier ages of the world a righteous man, and a man of God and of intelligence, had a better chance to do good, to be believed and received than at the present day; but in these days such a man is opposed and persecuted by most of the inhabitants of the earth, and he has much sorrow to pass through here.
The Lord takes many away even in infancy, that they may escape the envy of man, and the sorrows and evils of this present world; they were too pure, too lovely, to live on earth; therefore, if rightly considered, instead of mourning we have reason to rejoice as they are delivered from evil, and we shall soon have them again. The only difference between the old and young dying is, one lives longer in heaven and eternal light and glory than the other, and is freed a little sooner from this miserable wicked world. Notwithstanding all this glory, we for a moment lose sight of it, and mourn the loss, but we do not mourn as those without hope." (Teachings of the Prophet Joseph Smith, p. 196-197)

I don't know who is more valiant, those who die as children or those who die as adults; perhaps both are valiant in their own way. I only know that both our pre-earth spirits and our earthly souls are unique individuals, and that God knows each one of us, and that He knows the beginning from the end and therefore knows what is best for each person's growth and salvation.