I would like to ask, is this the same way you feel when some kid knocks to sell cookies/junk or the guy knocks to sell you steaks out of his truck and all the others that knock to sell stuff?

Is this a pefect example of a free Republic, I have the right to come to your house and ask you a question and you have the right to answer no if you so choose.
As long as there is no trespassing or harassment I see nothing wrong with those who wish to sell you faith, cookies, magazines or any thing else they want.