Yup, gets old quickly.Diving with someone who feels they have no depth limit may have drawbacks also.
I vividly recall a dive trip to the Banda Islands a few years ago where a couple of German divers were notorious for ignoring the DM's plan and doing whatever they wanted, hiding their dive computers immediately after surfacing.
By day 2, off Karang Hatta the DM demanded to see their computers and gauges... they went to 60m+ on an single 12L tank to reach a ledge where they could sit and look down into the black abyss of the 5900m Banda Trench, surfacing with around 20BAR each..!
This led to a heated exchange with the DM about safety standards.
The diver's position was "If I go into a bar and buy a bottle of beer, I don't drink two-thirds and hand the rest back. Same with my air fills."