I would also add that one of Bitcoin's major strengths in relation to other potential currencies is its stable economic policy which people basically consider immutable. Bitcoin's fiscal policy is a fixed supply and being based around PoW. Look at Ethereum, they have changed fiscal policy several times, maybe that's a fine thing for a network which is built around making a distributed compute platform, but it's not a good thing for something which is designed to be the new global reserve currency. Changing any of these key things with Bitcoin could change the stability of that fiscal policy. If we open the door to fiscal policy changes, we lose a major item on Bitcoin's feature list.