My "other" is that I have 8 children and my mother and I wanted them to know where their food came from and how nature works: Chickens forage, excrete, excrement goes into compost, compost feeds the garden, the garden feeds us. DH and I bought this small acreage right about the time Mom was diagnosed with pancreatic cancer. She fought for a year and a half, but ultimately passed away. I was a difficult child/teen, raised in town and learned as little as possible about her passion when I had the opportunity. Mom was going to teach me along with my children.
It took us a couple years, but the children and I finally determined that we would just have to learn on our own and provide the legacy Mom wanted to give us without her. No small task, in my eyes, since she was raised with chickens and livestock, and had gardened "organically" from forever. It's been 3 years of learning on BYC, reading people like Harvey Ussery, and trial and error, but I think I've made her proud. DH is not particularly enamored with the whole project but has supported us by building every single thing we've asked for. Our children really know their stuff and eat very differently now because of the education we've given ourselves to honor her. She was a grandmother who gave apples for treats, not candy, and explained the difference between how candy will actually bring your immune system down for several minutes after eating it, whereas an apple will strengthen the immune system.
My "other" reason is to provide a legacy on my Mom's behalf.