Trading is very unpredictable and I think that its risky to do it but on the other hand it stays very profitable for a short term so due to that its also again worth it too.
I can agree with you, trading is always the unpredictable job. But you can analyze the market with the skills you have, try to analyze the market so that you can recover your investment if you are confident about trading. Don't consider trading to be unpredictable only when the market is below the mark. It is always predictable when the price of the coin is always positive.
i do not think that trading is unpredictable job. i think there are such kind of people of who have good experience in trading and they also have good experience in predicting bitcoin. they always do the right prediction in a right time and they make a good amount of money from trading. i am hopeful that one day i will also become good trader and will also do prediction about bitcoin.