Definitely, everyone can use bitcoin even ordinary citizens as long they acquired proper knowledge on how to use it. Even they have limited knowledge about technology they can easily use bitcoin with proper guidance. Thus, many people here in my country can easily adopt the use of technology even bitcoin too.

No, this is unreal. ETH is one of the most stable and advantaged cryptocurrencies what became better than BTC.

Bitcoin fluctuates way too much. The Biggest argument for Bitcoins is also the biggest weakness, in that is there is no regulation of the currency. So if the Currency value increases or decreases, there is no agency who is gonna cut intrest rates, pump capital or stop production to keep the value floating. Its one day sink, or one day swim. Its gonna be like life in the 1800s. One day youre rich, one day you are gonna go broke, until they made the Federal reserve to start currency regulation and stop there cyclic panics that were happening. But Bitcoins are designed specifically to evade regulations, so I dont see this happening anytime soon.