My apologies if this has been discussed many times, but I don't understand the appeal of high depth ratings and helium escape valves on dive watches. I am a certified diver, but can't see a reason for needing greater than a 50m depth rating. Even the Advanced Open Water Diver certification only gets you to a recommend 30m limit. The vast majority of dive watch owners will only swim or snorkel with their watches. Then 99% or more of those that dive will ever go beyond 40m which takes you into decompression diving. I have dove a fair bit and been around a number of divers. My dive instructor was the only person I know to dive with Tri-mix (which includes helium). It seems to me that a well maintained 25m rated watch is all most people need, and almost all divers would be good with 50m. Is it the mystique? I have a watch that could do amazing depths even if I won't.