"easly be able to bypass the WPA/WEP encryption anyway"
The MAC address is easy to harvest,its displayed in the SSID.Turn it off.
WEP/WPA encryption is possible to hack(I have several "live" CD's with wireless hacking tools,they're freely available online)but requires many thousands of packets collected for analysis.
My suggestion would be...
Use a combination of WEP/WPA,with MAC address and IP address filtering(I do)Then its quite likely the drive-by thief will do just that,drive-by,only keep going and look for an easier target.There are hundreds of totally unprotected LAN's about.
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