reply to Angrychair
Not to even mention your linux machine being used as a router is a target, unlike an appliance router.A compromised linux machine is a real problem, so it just seems like a lot more admin work and power use than most people would want in the long run.
Yes, of course you have a firewall for intrusion protection, isn't that axiomatic? My point is it's just a point of extended risk compared to an appliance.