Its too late for anyone to conceive an idea of destroying BTC. With the way it has grown and its application in the business world it will be nearly impossible to destroy BTC.
Bitcoin is still not legal tender in my country neither is any other crypto currency. But its still utilized by many as long as you have got the system and internet to participate.
If no one spends Bitcoin the circulating supply drops and this will definitely give rise in the price of Bitcoin. And i guess thats the main reason for the current rise in Bitcoin.
I believe whenever a fork is about to take place people speculate a rise in price of BTC. This triggers a high in demand of BTC which in turn escalates its price.
Its not in any way being greedy. For me i hold unto BTC because its an asset to me that has great potential of growing in value unhindered. So i rather hold it tight than sell.