I use Wi-fi Recluctenly. Extending range increseses security risks. As long as your not doing banking and just watching YouTube I guess its all right. I have certainly been hacked more than once (kids etc) and I am more careful than most.
I totally agree with you as I always do my financial transaction through wired network. I highly recommend everyone do that as well.
These statements are not necessarily true. Wifi, even extended, is not inherently insecure. The settings on your wireless router will determine it's security or lack of.
Most people don't or don't know how to do things like:
Change the default admin username and password on the router
Change the default wifi network name aka SSID
Change the wifi encyption settings
Use a strong wifi password that isn't easily guessed or a dictionary word
Keep the firmware updated on the router, extenders, etc.
Sadly, most home routers like LinkSys, Netgear, etc. don't require people to change these settings and they are often buried. Some routers have convenience "features" that make your network more vulnerable and are usually turned on by default.
UPNP or Universal Plug and Play and is usually turned on by default. You can Google what UPNP is and why it's insecure.
WPS or Wifi Protected Setup, which makes it simpler to connect to your router by pressing a button vs typing in a password. This hardly saves any time as you have to go to the router to press the button and have your device with you.
Remote management, which obviously lets you manage your network from outside the home. Why would you ever need to change your wireless network settings when you're not at home?
Many ISPs like Rogers, Bell, etc. use a combination modem and router. An ISP might lock out certain features or not allow you to change them. Better to have the ISP's modem and you can supply your own router.
A wired connection can be more secure vs a wireless one, but it again depends on your network and router settings. A hacker can potentially access your wired computer if it's plugged intoo a compromised wireless router.
If wireless connections were truly so insecure, we would not have wireless POS machines at stores, restaurants, or gas stations.