What should we be suspicious of? The real question is why aren’t governments making Bitcoin legal tender in their states. So far only El Salvador and Central African Republic are the only countries where Bitcoin is officially used as a currency. I believe that if the rest of the world adopts Bitcoin, it will hasten the growth of bitcoin. I can’t think of a negative outcome should governments adopt Bitcoin
It's not that easy, from the list of countries that has adopted Bitcoin as a legal tender you would notice that they are developing (also called underdeveloped) countries their currency and economy are struggling or has low value, Bitcoin is like a new hope to their citizens and crypto-currency would be a better way to have a more effective currency for their citizens, but in the developed world their is the battle of Ego, control, power, the government wants for authority and they can do that with the Fiat system but it becomes more difficult with crypto-currency.