There are many reasons to choose wired security cameras and many reasons to choose wireless security cameras. The things you should consider when it comes to choosing to go wired or wireless should include the size of your home or property, the placement of the cameras, and the cost. Wireless systems are becoming more affordable all the time, but they also tend to be a little more expensive than a wired system.
Another thing to consider is the distance of the wireless signal being transmitted. Some wireless security cameras have a one hundred foot signal limit, while other systems can go up to one thousand feet. A wireless system with a long signal is very convenient because you can place them in many different, hard-to-reach spots, without worrying about wires or cords. This means you can have your cameras in areas that do not have the proper outputs for the alternative wired systems.
But wireless security cameras are not the only option, or always the best option. A wired system also has many benefits. For one thing, wired cameras tend to be more cost effective. For another, you never have to worry about dropping the signal or suffering from interference and other complications. You also do not have to worry about something obstruction or otherwise negatively affecting the signal. Wired systems can be placed almost anywhere a wireless system can be placed, and there are ways to hide the cords and wires that are attached to the wired system.
In summary, take a broad view of your goals with your surveillance system before you choose to go wireless or hardwire your system. Be sure you understand how the cameras will be installed and if they will work in the areas you need them. Finally, be sure to do a quick cost comparison to ensure you are not spending money needlessly, simply for convenience.