The price of wall mounts can vary widely, and even though the cost may be small in comparison to the cost of your TV, a lot of people find that even the most basic types of mount can actually be relatively expensive for that they are. If you already have a cabinet to house your receivers and other equipment, it can look slightly odd to see the TV mounted to the wall instead of placed on top of the cabinet.
Some people like the idea of dividing even a small vanity with cabinet on one side and drawers on the other. Larger items can be stored in the cabinet and small items can be organized in the drawers. If you have small children, you can also place locks on the drawers used to store potentially dangerous items and cleaning substances.