because it is used mainly for illegal transactions. The 'price' of a bitcoin goes up because more and more illegal transactions are made and the demand for bitcoins is high. I don't like to change my money to enable that. It is a principle thing.
'Normal' use of bitcoin is also difficult in many countries. I don't know any retailer (Thailand, The Netherlands) that accepts them or have products i want and as such it is of no value to me.
I invested in land, 'bricks', tools and education. I am separated from the 'leeches' already.
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