"...the appearance of the spirit in the body..."
If we can agree that God is the All-Powerful Creator, then it would seem to undoubtedly follow that He is All-Knowing.
So there must be good Reasons for the processes on Earth...
good Reasons for so many different plants...
good Reasons for animals that eat each other...
good Reasons for human infants staying with their mothers longer than other creatures...
good Reasons for our soul to hang out with a body...
"The wisdom of the appearance of the spirit in the body is this: the human spirit is a Divine Trust, and it must traverse all conditions, for its passage and movement through the conditions of existence will be the means of its acquiring perfections. So when a man travels and passes through different regions and numerous countries with system and method, it is certainly a means of his acquiring perfection, for he will see places, scenes and countries, from which he will discover the conditions and states of other nations. He will thus become acquainted with the geography of countries and their wonders and arts; he will familiarize himself with the habits, customs and usages of peoples; he will see the civilization and progress of the epoch; he will become aware of the policy of governments and the power and capacity of each country.
"It is the same when the human spirit passes through the conditions of existence: it will become the possessor of each degree and station. Even in the condition of the body it will surely acquire perfections."