I cannot tell you how many times my Dad has had to re-setup our main Windows family machine. He would use the best firewall, and he even setup two outer firewalls, but year after year we got hit with viruses.
Don't blame whatever OS, sounds a bit like your dads fault to me
Everybody should choose the OS he/she is content with.
Anyway I'm a windows guy because
- Linux will never be THE gaming platform, not all vendors would like to open their drivers, as a developer you should stick with your clients platform
- MS Office is still THE standard office solution
- my MCSA degree would be useless
Oh nonetheless I use debian on a few webservers, for this purpose it's perfect
