I loved it too gubberningbody, though not for the confrontational thing, I actually thought I was being a diciple of Jesus, and prior to joining the Dubbs, I had been a very non-communitive person, suddenly though, I had something to talk about and siezed it at every oppurtunity.
So much so in fact, that I would be ringing up Pioneers, trying to get them to come out of the field service in the eveinings when I was home from work, those that did enjoyed far more productive field service when people where home than thier usual habbit of knocking on empty doors in the mornings.
You get out of things what you put in, I had pioneers express thier jealousy at the amount of RVs and studies I had. I look back on what I got away with with amazement, people think its bad being knocked on at 9 am on a Saturday morning, well imagine its 9:30 pm on a dark foggy evening in the countryside, and people would answer the door to find me wanting to talk about God, yet people where so receptive!, maybe I was more interesting and shocking than whatever rubbish was on the TV.
In the end, I was given my own map, even though I wasnt a Pioneer, and I would go out on my own as it was so hard to get others too, that is the very best ministry you can have, when you are on your own, householders probably are intemidated to have two people preaching on thier doorstep.one is far more acceptable.
Doing the Ministry out of genuine Love for God rather than fear of men, also brought benifits in the form of Holy Spirit, sometimes I would be in such a Spiritual high by the time I got home, that I would ask God to please take it away so I could get to sleep.
Its the only part of my life I feel truly proud of, though in restrospect obviously the Witness doctrines of men sully the work, but getting people to think about God and the Bible, I would still do, and in fact do do at work, I still Witness about the Bible, but leave out the JW stuff, and people are less reluctant to listen when you lose the JW stigma.
Just as you say, you can no longer go knocking on peoples doors to do it.