Using your lights

Just a question, how many people who have 20 plus lights use them. Im not a collector i use them every day brutally sometimes. Yes i have lights that i like but never use but its functionality that makes me use certain ones everyday. I hear enthusiasts a lot here. Im using a d4 right now its muddy and looks bad but works perfectly. If it breaks i will be unhappy, but they sell them every day. My other question is about all these enthusiasts lights, do they hold up being dropped submerged thrown and just all around used?