As pointed out in this answer, the term yaw damper is a bit wide. This autopilot function is typically used to
- Dampen unwanted oscillations in the yaw axis such as the dutch roll mode
- Helps to keep coordinated turns by counteracting sideslip
- Can be part of an Automatic Flight Control System (AFCS)
This is also described in the according manual (page 414).
However the seconds point becomes important for the take-off or landing of a small general aviation aircraft such as the Cirrus: In a cross-wind landing, the pilot tries to achieve a sideslip angle, to be able to land on the runway. The yaw damper would try to counter-act this sideslip. For this reason it has to be deactivated for the landing. The same holds true for take-offs: In order to be able to fully control the aircraft e.g. in a crosswind, without having unwanted inputs by the yaw damper, this system is fully deactivated.
In pretty much all other flight states (e.g. 200 ft above ground), you most likely would never fly with a sideslip angle.
According to the flying magazine, a second reason (although only for bigger aicrafts) can be:
Attempting a takeoff in a large aircraft with the yaw damper engaged could lead to
the airplane correcting on its own for adverse yaw in the event of a
power-plant failure. That makes identification of the failed power
plant more difficult