I guess the WT allows some to fudge on their time when it is to their benefit. With their example no wonder witness find it easy to mess with their time cards.
As for spending time and money taking care of the homeless I guess the way the Watchtower looks at it is there is nothing in it for them so why do it. The homeless usually have a lot of mental problems but not the kind that would make them good JWs. And what is the point in helping out the poor? They wouldn't be able to give anything back to the Watchtower because they're....well poor. If the WT does some thing they want a return on their investment.
I remember working on a hall they were building with a friend of mine. When he told an elder from my hall he wouldn't be able to make it the next day because his wife was pregnant the elder ask him what was more important Jehovah's work or his family. At least the guy had the sense to spend the following day with his wife and not listen to that idiot.
Life is too short. You just had the wrong attitude to be a good JW. You cared about people not numbers. No wonder you are here.