Now taking this issue in to your home/office with printers and computers .... Wired is ALWAYS going to be better and most likely FASTER, arguably more secure and certainly more reliable. I say if you can go wired then you should go wired.. if your desktop or laptop computer is sitting on a desk right next to your internet modem/router then why not have a cable there that you can plug in to. Of course if/when you are using a laptop and want to wander your home, you simply unplug your network cable. This applies to your printer as well. Since most new printers come with built in wireless (and wired) networking it doesn't mean you should be using it.. the wired yes, in fact again, wired is best. If you can plug a network cable in to your printer and in to your router then you are guaranteeing that all networked devices will have access to your printer, whereas if you utilize the printers wireless capabilities just because you can, then you risk the chance that the wireless connection may break and you are then having to fiddle around with re-entering the network pass key from a useless printer menu/button system. If your printer is going to be across the room or in a closet nowhere near the router then sure, you are going to use the wireless but you should be aware there is some knowledge of networking required.
Router networking security is important and you should NOT be using the Wireless Protected Setup (WPS) features of any router. In fact you should be disabling this. The WPS feature allows you to push a button on your router and on the device you want to connect and then when prompted, enter the WPS number that is assigned to your router. This WPS security has been hacked and is a known security issue on most, if not all, routers and should be disabled. Yes sure, it might make connecting to your router seem simple but is security not important to you?
Got a question or problem that you need help with in this regards, just contact me and I can hopefully point you in the right direction!