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I trade into coins because they can be moved around fast from one exchange to another.. I often do arbitrage, because the market is so new that there can be a big difference from one exchange to the next.. If your money was in regular old USD, you cannot move it in minutes to another exhange.

IIRC, Luc said in one of his videos he's never taken a withdrawal from his crypto exchange accounts. So he's not using this stuff to pay the bills. Presumably that comes from his stock market trades.

Yup, this is true.. I havnt sent anything back to me yet.. Im a true investor, I bought $300 worth of BTC in 2015, its all up up up since..