All software is buggy.
That may be so now, but that doesn't mean it's impossible to change it. That the current default state for software is "likely insecure" reflects the fact that the market price for software security is lower than the cost of providing it.
Laws against software attacks raise the cost of performing such attacks, and therefore lower the incentives for people to ensure the software they use is secure. I think it would be worth a try to take that illegality away, and see if the market responds by coming up with ways to make software secure.
You can't get really good physical security without expending huge amounts of resources: physical security doesn't scale well. Software security is different in principle: If you get it right, it doesn't matter how many resources an attacker can get to try and subvert your system over a data channel - they won't succeed.
What do you believe that most people on this site don't?
I'm especially looking for things that you wouldn't even mention if someone wasn't explicitly asking for them. Stuff you're not even comfortable writing under your own name. Making a one-shot account here is very easy, go ahead and do that if you don't want to tarnish your image.
I think a big problem with a "community" dedicated to being less wrong is that it will make people more concerned about APPEARING less wrong. The biggest part of my intellectual journey so far has been the acquisition of new and startling knowledge, and that knowledge doesn't seem likely to turn up here in the conditions that currently exist.
So please, tell me the crazy things you're otherwise afraid to say. I want to know them, because they might be true.