Quite frankly I don't think any government will mint any stable coin as the already existing stable coins are not from any government but from individual crypto projects and also thinking or having the idea of HODLing stable coins and making good ROI from them really don't make sense to me cos the little I know about using stable coins in crypto space is for you not to lose the value of your another crypto assets when the price is in a downward trend.
Well, there are some places that does pay you interest for your USDT or anything like that, which is really not that bad, I think it is quite good and I honestly think if you could find a way to make that more trustworthy, or get it from a place that is profitable, that could end up with a great amount of profit in the future for you.
I have invested a lot in them, I am a bit afraid because if it crashes that means I am going to lose all my money that I put aside, of course this is money I can afford to lose but I still think that I would rather not lose them

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However making money via crypto currency by putting dollars into something and making a huge return all thanks to system representing a ponzi like scheme where you do not lose money as long as people do not withdraw a lot is actually quite good. I do not think that people all would withdraw together and I think we are going to keep making this interest.