a. there is no reason for the general public to acquire it
b. there is no easy way for the general public to acquire it
c. it is impossible for most of the world (the poor) to acquire bitcoin since most now have to acquire it from 3rd parties that follow banks rules and the poor is the majority of the world and ignored by western banks
d. it's a toy novel currency for a niche set of western people that refuse to realize most of the world will never use bitcoin nor any bank or credit card
e. the bitcoin network is fatally flawed by how slow transactions are now and it will never be able to handle 100 Million or over 1 Billion transactions a day as a real globally currency unit would need to do
f. 22 Million coins too little to fuel a global economy with 7 billion people, and the high price of a coin will scare aware most of the world.
These are all very short sighted, bordering on ignorant.
a. Businesses have a reason to prefer it over alternative methods. This means in one way or another, it is cheaper for a business to accept bitcoin over other forms of payment. They have already begun to offer bitcoin only discounts for products. Many places offer cash/check/wire discounts. Bitcoin will very soon be accepted similarly, but is much easier than any of the above for the consumer.
b. It is 100x easier to acquire than 2 year ago. This trend continues.
c. There will be future forms of physical currency backed in some fashion or another by bitcoin. This is bitcoin for the masses.
d. This point shows you have some other motive.
e. Transactions are instant. Confirmations are a little slower. Still faster than anything else, and does not rely on the whim of a central party.
f. This is simply ignorant.