I don't trust wireless. Never had much luck with it.
Sure, my smartphone and my tablet are wireless. But my actual PC I'm sitting in front of now and my TV and my DVD / BR players are all cabled. More stable connection, higher transfer rates.
I had a pair of wireless headphones once for watching TV without disturbing anyone. It always had bad connections even with a direct line of sight and then the batteries were out.
Nah. If not necessary I go RJ45.