The trend now regarding bitcoin is that it constantly goes down in every second and every minute. Is this the end of it? Will there be any possibility that its value becomes zero? Or specifically demonetised? Because for me I think 5 to 10 years from now this will happen simply because of the appearance of other alternative coins. What's your opinion about it?
No, there's no good reason to say the bitcoin value is zero. Bitcoin will still grow well, and you do not need to be pessimistic to see the price of the bitcoin that falls hard. You should see bitcoin a few years ago that do not have a decent value, but if you believe and hold it, then you have a great chance to make a good profit in the future.