I'm not sure how things goes in your country , but in mine you can talk how much you want ... that's not going to change anything at all . All they trust is physical cash in their hands (that's in general) .
Now if we speak about my family , they will probably won't ignore you and hear you talking but that's not going to change anything and for what comes to friends they may only get interested but it won't be enough to make them use it so yeah it's mostly waste of time .