justinschuh seems to have a deep technical understanding of programming and program security so I will defer to his greater understanding and make sure that I secure access to my computer when I am not physically present.
With all of that, my concern is that justinschuh seems to believe that anyone who has physical access to my computer and wants to do something malicious will have a deep understanding of programming, and that is silly. What about my druggie cousin who comes to my birthday party. He has no programming skills, but if he knew one simple URL he now has passwords to my bank account, my Amazon account and a ton of other accounts that he can use to transfer money or otherwise feed his habit at my expense. Or how about my ex-wife who gains access to my laptop because my daughter needed it for a school project. Now my ex, who has zero programming knowledge, nor does she understand what "threat model" even means, has passwords to all of my accounts including Facebook and Twitter that she can use to seriously harm my social/professional life.
So, you see, I get that you understand the programmatic "threat model," my problem is that you seem to be too smart to see that not all threats come from tech savvy "hackers." Some threats just come from opportunistic malfeasors, and I don't need to add any new opportunities to the seemingly unending list of ways people can screw up my life.