Most people seem to do it for the nutritional benefits perceived in
whole wheat, and for fun and interest.
I buy wheat and rye berries, organic grown, through a health food
coop, where I can pick it up at the store so I don't have to pay shipping.
I then store them in 5 gallon buckets with gamma lids. The last time
I bought I put a small amount of dry ice (which isn't easy to get
here in Boston) at the bottom of the buckets and let it sublimate
(melt) to drive out the air before sealing the lids. I"m just
finishing the wheat, which is probably almost 2 years old and it is
fine. I'm not sure if the dry ice helped or not.
Gamma lids are screw top lids that you can buy online for a 5 gallon
bucket that are air tight. My basement is very wet, and the grains were fine.
Dennis