The sensation of sailing on a monohull can not be understated. At the helm of a monohull you really feel connected to the boat and feel it responding to your inputs. Sailing a catamaran can feel more like aiming in comparison. Simply put, sailing on a monohull is the true sailing experience. That said, healing or leaning over of the boat is normal while sailing on a monohull. For first time sailors this can be an unsettling experience and cause seasickness in some cases.
The winds are not always in your favour. Fortunately, motoring on a monohull yacht is quite efficient and will provide you with alternative propulsion when sailing is not possible. Compared to a motor yacht, fuel costs on a monohull will be relatively low as these boats move easily through the water.
If the focus of your holiday is sailing, choose the monohull for the true sailing experience.