No real reason, though time and space is a consideration for me this season. I've got a ton of containers and 5 gallon buckets, and I like experimenting with different growing methods, so I thought why not. I know about corn's needs for cross pollination, so I'll probably either have to self pollinate it by brushing the flowers and tassels myself, or group several containers close together and hope that works.
I'll try and post some pics of the progress. Either you'll see a healthy 5 foot tall corn plant in a container, or you'll see a pic of a very angry me using yet another plant for a lawn dart. LOL.