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Yup.
HODL.
Even if the floor falls out from a major crypto collapse. It will fall and eventually regain its strength.

Crypto and blockchain tech is here to stay. Whether the current investors abandon the movement or not, this movement is going to continue.

Then I will just use opportunity to buy more ;)

He would rather leave a country than not obey the laws he knows are wrong and that's why I ask, not because I think all countries would make all crypto illegal. We will probably just end up with different levels of legality for each country, different laws, but I don't think there will be a single country that doesn't regulate them.