>It's interesting to think about though. You can easily throw away a pile of cash, but never half a billion. The volume would be too big, you would notice. But a bitcoin wallet of the same street value fits on a micro SD, it could literally fall through a hole in your pocket.

It's not exactly same thing, as you obviously won't lose something like that if you already realise its value. It's more along the lines of throwing out painting from your neighbor and he becomes world best paid artist in 5 years.

Still interesting and scary to think that individual can basically "destroy" irreversibly any amount of savings by forgetting the keys/ sending it to wrong address and that can be done with 1 click.