i have a wireless setup in my home. its easy to move our laptop anywhere we want to online. About the security, i just lock using MAC Address in which anybody who wants to connect the internet, i will keyin their laptop's MAC Address to wireless router.
I use a wired connection. A TV documentary in Australia showed that 80% of home wireless systems are unsecured and open for abuse such as complete ID theft! It took a professional hacker just 10 minutes to break into the secured computers from outside their houses too!
So I will always use wired!