No, just because your not seeing any results from the efforts you've made til now for introducing bitcoin, doesn't mean it's a waste of time... I would have surprised if they understood how it works and how great it is in terms of use and its potential... I've tried to go step by step since I'm the only tech person in my family (it sucks) and explaining to them the BTCitcoin is like explaining a college algebra to a elementary kid so it really takes time before they get a piece of how it works...I'm getting close there but it's just really hard teaching non tech people about it specially if their old...I suggest to gather them all up and try to compile some videos from YouTube that explains it real good and let them watch from time to time... I've seen positive results this way in shorter amount of time since the known speakers of BTCitcoin community do know how to attract people to BTCitcoin