Hand flying modern aircraft is fine, but the handling pilot must realise that he is significantly adding to the workload of the non handling pilot. In busy airspace this might not be acceptable. Automation led to a reduction in crew numbers, so the autopilot should be thought of as the third crew member - the aircraft is designed around this concept. So if you decide to hand fly, consider the workload you are handing your colleague, and if you are in a busy TCA you may decide that you are decreasing the safety of your operation. It goes without saying that in an emergency situation you should be able to cope - but practicing for emergencies should be done in the simulator.