My parents are simply not interested in knowing or using bitcoins as they are not internet savvy and prefer to stay away from it and they even don't prefer to use credit cards for online shopping as they have fear that it can hack their details so its very hard to convince them for bitcoins but its not too difficult to explain it to friends.
Yeah to explain bitcoin to friends is a piece of cake but to do the same thing to my parents is way more difficult. I've tried so many times but they still don't change their mind and same thing happens every time. They don't have the enthusiasm to know more about bitcoin and most technology stuffs.
The reality is that the older generation will always prefer to stay away from bitcoins as they don't want to waste their time in something that is totally new to them and they may even find it difficult to use it and at that age the would not be interested in experimenting with their spending.