You are asking "why btc".

You have read Lyn's post on QE - great!

Here's how I view it, and I believe Saylor as well: cash loses double digit % purchasing power annually for the things you want to buy and hold.

You can hold on to your melting pile of cash, or you can deploy that capital elsewhere. Art, wine, stonks, negative/0 yielding bonds, real estate, crypto kitties, or an asset that has been appreciating at a clip of 200%/yr.

Question is not why btc, but why would you put yourself at a disadvantage by holding fiat reserves.