There were two reasons for this. First- corn was difficult to get to market. It was bulkier than wheat, and therefore heavier and more expensive to transport. However, if the farmer fed the corn and stalks to his livestock, he had an effective mode of transport. He had essentially given legs to his crop.
It is said that Stephen Sargent, whose farm is also represented at the Lincoln Log site, utilized this method of transportation:
“He made two trips to New Orleans with flatboats of hogs.
He would build a flatboat, put in some hogs ready to fatten,
and enough grain to feed them until he reached the market,
then cast off. By the time he reached the market at
New Orleans the hogs would be fat. Then he had to walk
back overland and dodge the out-throats
and highwaymen enroute, who were laying in wait
along the trails for just such prey.”