The major stuff why people don't use bitcoin as real currency - not stability in price and it makes people scared to start to use cryptocurrencies in a daily way. In addition in some countries using cryptocurrencies prohibited.
People lack basic knowledge regarding the benefits of this technology otherwise the instability is not an issue at all. People are highly interested in huge profits and bitcoin is making this true for them. Sacred people shall read success stories of bitcoin users and if they dont want to use it as a currency, they can like most of the world use it as mode of investment. We just need to spread knowledge about bitcoin.