Perhaps some day a dive op will try to restrict me to 60' because I have only an OW card, but it has not happened yet while diving in a lot of different places. After a few minutes chatting while filling out the paperwork, the only question I sometimes get from the DM is what max depth am I comfortable diving to on the profile that they had planned for the dive. I would never discourage a diver from getting AOW, but for me, the lack of that card has never caused me to miss a dive, or not dive those profiles that I chose to dive, am prepared to dive, and have the personal experience to dive. I know better than anyone else what my personal limits are on any given day, and could care less what card I or anyone else has in their wallet. After seeing a lot of AOW divers, I am convinced the AOW course would have been a waste of money for me. Not for everyone--just for me.