Definitely there will be a decrease in price after bitcoin gold
I agree it will not stay for long term on its value or it will not climbed much it take sometime to gain more power . It always volatile because of some reason from the market which is the demand of supply. Maybe you are assuming that you can get a btc gold in future instead of eagerly sell because as of know its losing its value . But its up to which do you preferred. Cause in my prediction it will lose its value a little bit then it will jump again to the higher value. Who knows.