I stack because I don't like it just laying around on the floor - I'm afraid of tripping on it. At least with stacking I know if there is an earthquake I won't have those worries anymore.
I want to have enough silvers to stack them into a shape of a door way and then walk through it. My fortress solitude.
All that really matters is whether the LCS crowd Kurt's referencing is growing/shrinking. Then whether the online activity in terms of STR is truly growing/shrinking. Then separate the 'stackers' [i.e. bullion investors], from coin traders/investors/collectors, regardless of demographic. Then calculate a percentage of how many of the entire collective are just straight up hoarders. Poll THAT. If we can get honest results.
Actually I was thinking what if I made a safe out of silver then painted it black. If thieves broke into it there would be nothing inside and it would be too heavy to carry away.