Offensive Christians

I know they mean well, but I don't really enjoy being approached by door to door evangelists, street preachers or any such. OK, the street preachers don't bother me so much. They just shout and make noise and you can walk or drive past them. For the most part, people ignore them. At least they don't speak directly to you.
But, I wonder does anyone really accept Christ by being shouted at by a street preacher? Somehow I doubt it.
The other day, as I was waiting in a shop, a random man walked in and started handing out tracts to everyone in there. Now, I know everyone in there is born again. But, the man insisted on witnessing to us. He insisted on sharing his faith with us and kept asking us if we would like to pray to accept Christ. We kept insisting that we were already born again and that we all had a relationship with Christ. Maybe he could pray that our relationships be drawn closer to Christ. He didn't like that idea too much. He really wanted us to be saved.
It really was offensive. If I had been say a Muslim, I don't think that man could have persuaded me to accept Christ. He knew nothing about me. He doesn't know anything of my life or struggles. It was like he had no compassion. It was like he wanted to force the issue just to say that he had gotten someone saved.
I much prefer the relationship approach. Yes, it may take longer. But, it doesn't seem to get on people's nerves as badly. Yes, it takes longer to build a relationship with someone. But, wouldn't you feel that much more joy in seeing them come to Christ?
I guess this is just a random thought and probably could be debated by many different people in many different ways. However, my personality isn't one that lends itself to wanting to be a street preacher or walking door to door to randomly force someone to accept Christ.
What would have happened if I wouldn't have already been born again and had accepted Christ? Would that man have kept coming around to disciple me or would I just have gone on with life as usual? In a relationship, at least there's a chance for discipleship and accountability.