Wireless can be robust and reliable. It's also susceptible to interference and sometimes error prone.
It's preference and opinion, but I agree with RDGCSS, and use WiFi only where necessary. 1 laptop, iPhones, iPad.
The rest of my home and devices are networked via Ethernet.
I have 4 wireless access points. 3 evenly spaced N WAP's around my house on staggered channels 1, 6, 11. And an outdoor AP so I can control my Yamaha outdoor audio zone reliably. And surf the net when it's nice out.
My Ethernet Network devices:
2 Roku 3 4200X
Roku 2 XS 3100X
Roku XDS 2100X
Roku DVP N1000 (still works, except wifi module)
2 Apple TV's
Sony XBR-55HX950 TV
Sony KDL-52XBR9 TV
Yamaha RX-A2010 AVR
Yamaha RX-A720 AVR
Sony BDS-790 Blu-ray
Sony BDS-580 Blu-ray
HP Multi-function Printer
Various switches and hubs. Would like to update everything to Gigabit as possible.
One of the first thing tech support asks you when trouble shooting is are you using wired or wireless. Second being how fast is your Internet connection. I have Comcast Blast! 50 Mbits down/10 up. But it peaks from 75-100 down.
That's two things I've easily knocked off their script.