PADI pushes courses relentlessly. We did our OW and were 'encouraged' to do PPB, Dry Suit, AOW, Rescue.... I'm surprised there is even a number of dives requirement for DiveMaster etc.. And how they can honestly say someone with only 50 dives is ready to be responsible for a new diver I dont know - I had no idea it was such a low number. Luckily for our family, the local shop is run by a very experienced diver who over trains his staff and we have not met anyone associated with the shop who wasnt very competent. But 50 dives? I've almost got there and I'd say I can just about look after myself - and that's in a 20m quarry.