I am so old school!!! This kind of stuff makes me almost pass out. The security issues are so huge that I probably would not even consider using NFC (even if I could) for a long, long time.
I do a lot of flying and I see people in airports all the time on public wireless networks, checking email, logging into bank accounts etc. When I'm in an airport or on a public network the only thing I do is to check news on CNN or MSNBC, I NEVER, EVER go to a website that requires a login unless I am sure that it is a secure login and even then would never log into a bank or the like.