The time was when great evangelists stood on soapboxes in parks at weekends and proclaimed the Gospel message. There are more 'comfortable' ways of getting things across nowadays. Presumably you are using one of them right now, in the form of the Internet. Hence our duty - we owe it to God who gave us the most precious Gift of all to make it known to those who haven't been told or do not realise the important thing which we have going for us. We also owe it to our fellow men, whom Jesus commanded us to love as we love ourselves.
People lead busy lives and their days are consumed with the cares of the world.
It is only at certain times that people are receptive to matters spiritual. That is not the way it should be at all. The emphasis really ought to be on seeking the Kingdom of God. Jesus tells us that, if we concentrate on that, all other things will either be added unto us or will pale into insignificance. There is a story that Jesus once visited Mary and Martha.