Sometimes it helps to force the use of it onto someone...
I had a small debt, only $150 that I needed to repay to a friend. Had $200 worth of bitcoins in my wallet so told him I can repay him BUT I could only do so in bitcoin. After arguing a bit he opened a Coinbase account and received his money from me in bitcoin.
He was impressed with how quickly the funds arrived and from what he said afterwards it's clear that this will not be the last time he will be using it.
I think there are many misperceptions about bitcoin still doing the rounds leading to people not wanting to use and or accept it but times are changing.