Koa, my husband and I all live on the main island - Oahu. My husband is in the military and is gone pretty often, so we got Koa to keep me company. He's been so great! Now I am never lonely.
Hawaii is definitely a nice place to live, but beware... when you live in paradise, it no longer feels like paradise. Especially when you're paying $8 for a gallon of milk! We like it though... the beaches are free and so is the hiking (the best parts of Hawaii that unfortunately a lot of tourists never get to see.)
Aloha!