Addiction in gambling happens when the user expects big earning in a short time period with small investment.
The addictive potential is the hope that makes us think that we can make big wins. Added on top are the tempting advertisements of jackpots and big wins. We all have an inner child who is devoid of logic and reasoning and it gets stimulated by these things making us play that game more. If anybody who is a gambler would have used their logic properly they would have stopped gambling. 
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This happens with bitcoin, but the same won't be successful everytime. This way I too have spend expecting big return and the end result will be loss. With gambling loss can't be minimized as like we do with trading, with this it is always good to spend wisely.
Trading also has risks involved. Nothing that we see here is devoid of risk. What you need to do is associate yourself with those things that you are comfortable with. Try different types of trading but dont go for binary options because that is again nothing more than gambling.