While many airplanes can land by use of automation, the vast majority of landings are still done manually. Pilots are generally better at landing in more dynamic weather conditions than the automated system.
How often do pilots land manually?
Pilots make manual landings around 99% of the time. When there is very low visibility the autopilot can be used to for an autoland, but this is very rare, and requires specific airport facilities, special training and certain aircraft capabilities.
Why do pilots land manually?
I have landed safely when the visibility was less than 400 feet using autoland. In other conditions, such as gusty crosswinds, a pilot manually flying the airplane provides a better approach and landing. Also, it is important for pilots to keep their flying skills sharp and manually landing helps achieve this.