Though US dollar is in a lot of debts, but it won't be totally worthless. US dollar is recognized and accepted by many countries all over the world. So, it won't be possible for US dollar to become totally worthless.

Bitcoin is always the best and the safest option even if the price is low. But, analyzing the current situation it is pretty clear that a big money inflation is coming for US. So, crypto is indeed the best option.

Many experts and economists talk about this. But we do not know for sure when exactly this will happen. Therefore, we can not count on this. All crises, as a rule, happen suddenly and unexpectedly for everyone. But I'm sure that the cryptocurrencies will then grow very much.

I wish this should a significance influence on bitcoin, because everybody prefer to exchange bitcoin to dollar than any other country's fiat. Meanwhile when dollar is down it will affect lot of transaction and can cause global devaluation.

Yeah, I wouldn't really take financial advice from someone like Kim Dotcom... Next you'll tell me to take investment advice from McAffee 
The dollar isn't going to crash any time soon... I mean invest in Bitcoin, but don't do it because you think that the dollar will eventually become worthless, you could be waiting for a very very long time.

Buy Bitcoin because there is good perspective behind it; can growth your wealth, can became source of payment one day... But not because dollar is going to crash. I don't say that it is not possible but it can not happened without third world war. USA will not allow for some other currency to become world strongest one and to lose primate as worlds strongest economy and country. And if that someday happen, I don't know how damaged we will get out of that sh.. . As Einstein said, 'I don't know what weapon will be used in third world war but I know what will be used in fourth; rocks and sticks'. Most probably there would not be www. and crypto would become useless.

Yes, Currently USD is having so many issues with greater liability but What I believe is that it will not be so easy to drop this currency as this is used worldwide and all the transaction usually converted into USD for payment. It might lose its value.

How does he know that? I think that does not differ from the prediction that btc will be $1m or $1. It is in fact just a  tweet to take advantage of the popularity of crypto.

According to many experts, bitcoin is the future. If US dollar becomes worthless in future, crypto can replace it. But as dollar is an established and well-known currency all over the world, so, there is very less possibility for US dollar to become totally useless.