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I think if you invested in bitcoin at a low price in the market compare to the past month price of bitcoin the market price today was low playing in 7000$ - 9000$ in the past months the market price of bitcoin,
It was a good opportunity to invest in my opinion since the market price of bitcoin was low and when the market recovers it is surely a good profit earn.
You need to study the bitcoin market price if you want to invest so that you could easily invest in bitcoin.
There is no "if" when we need to answer on this question. We did not made a mistake investing in Bitcoin, maybe we invest
in wrong time, maybe we could buy at lower price, but maybe that will not be so important when Bitcoin rise a lot in the future.
We invested in Bitcoin and we support crypto-currencies. That is not a mistake, we are progressive people with a clear vision
of the future.