because bitcoin system was so protective and people in all country starting investment everyday, it makes bitcoin can survive from extinct
Well Bitcoin is a currency now, and main changes in the future around Bitcoin will be regarding mass adaption. Such transition will only happen though if Bitcoin can solve problems regarding mining and transaction fees, as they are to high for small payment as they will sometime result higher than actual purchase.
I think Bitcoin will be a real value of asset or Physical gold in the future. Well i guess other altcoins could be the mainstream or a future currency. Yes bitcoin can solve problem regarding mining but regardless on it's transaction that i don't wanna discuss.