The best way to kill btc is easy
Make Fees Insanely High (Which they are now, $20 or higher)
Transactions take days or weeks (Which is happening now)
^^^^^
Updated
Check forum many users complain about spending $20 to send less than $100.
No need for them to lose all of that money ,
convert to other coin and pay less than a $1 That's easy to do if your coins are on an exchange (though wallets like coinbase only give you the choice of btc, eth and ltc), but if you have a hard wallet, you are completely stuffed and have to pay the fees. Worse is if you are an early adopter and collected lots of small tips - that makes the number of inputs huge and you end up having to pay practically all of it in fees. Nice racket if you can get it.