Preaching by action in islam

I am a preacher in islam, I preach people according to the way the Quran says to preach, that is to go in public and recite to them the passages of the Quran. I also talk with them, answer their questions and ask them questions about their faith. I also give out Qurans. But every time I ask other Muslims to join me. They say that they only do Dawah by being good Muslims and by our actions. I am seeing this trend with the bulk of the Muslim community especially when it comes to preaching non-Muslims. In the Quran the prophets they went to the people and discussed with them, they were not content with just being good people so that people would follow. I understand at the time of Muhammad (pbuh) and Sahaba few people enter islam Just by observing the action of Muslims, but my question is that does this make it right to only preach by action.