$2 million is more than enough to lead a comfortable retired life.
Eh? in my country this value only serves to buy a comfortable home, but the person will not have a comfortable life for one year with 2 million dollars.
Do not need to rush to reach $6800 or more than $7000, most countries will legalize bitcoin in the future and many companies will accept bitcoin as a means of payment.
$2 Million is not enough? Very few countries in the world have an average per capita income of more than $100K/ year. Even in expensive countries, it is possible to live comfortably on $100k/year. That means your $2 million will last 20 years. A lifetime for most.