ubuysa
The BSOD Doctor
Hmm, I do wish there was a tongue in check emoticon, I wasn't being wholly serious.What if something happens and you require rescuing*? Or a hyperbaric recompression chamber (which means taking a nurse and a doctor away)?
You need contact with people at dive sites - gas fills, for example.
Agree it sounds daft on the face of it but unfortunately it's not
*As happened to two divers just like week.