After going through random boxes and bags in my closet I have rediscovered some knives that I hadn't used in a long time. I may be in a slow slide toward being featured on Hoarders in a few years...I don't want that. It is time I reduce the number of knives in my possession to those that have either sentimental value or practical use. The way I am going about this is by establishing categories based on purpose of the knives and ranking them based on how well they fit the category or overlap into other categories. My categories are based on activities that I participate in and responsibilities I have in various roles. My categories are as follows: 1. Camping/Survival 2. Fishing 3. Small game hunting 4. Urban carry weekday 5. Urban carry weekend 6. Hiking 7. Barbeque Bling...yes, it is essential. What are your essential categories?