;)Bitcoin is magical, just a few years ago is still very low value, but inadvertently, he just like spring coming, everything grows, straight up and up. 
there is nothing magical about it. it in fact is very logical.
there is a demand for bitcoin and it is increasing each year with more adoption and since there is always going to be a limitation on how much bitcoin is available, the price rises and will continue to rise as long as this demand is growing which it is growing.