You have that thumb drive backed up? Because thumb drives can, occasionally, spontaneously fail, for no apparent reason whatsoever, and the fire-proof box isn't going to help (hell, it may make matters worse if futzing with it generates ESDs).
Also: where do you keep the encryption key for that thumb drive?
No 50+ gamers I know either use smart phones or consoles for gaming, well some use consoles. Smart phones suck for gaming, no tactile feel from virtual buttons.
Don't get me started. It's a huge market, there's enough consumer interest to make and sell phones with air triggers and actual cooling fans, yet somehow a d-pad and a couple buttons is a bridge too far.