The 99 "righteous"

One scripture that has always bothered me was Luke 15:7. It's the scripture that says "I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just person, which need no repentence." I completely understand why there would be great joy over a sinner that repents, but I have always felt that to say that there was more joy over the sinner than 99 righteous people makes it seem like the heavens take the righteous for granted. Furthermore the scripture doesn't really make much sense because face it, there aren't 99 of us that haven't sinned. There was only one man on earth who didn't and the fact that he never sinned and that he completed the atonement caused more joy in the heavens than possibly anything before or after. So for this and more this scripture has always bothered me.
However today I had a most interesting insight. To me it resolves my concerns and provides a more fitting interpretation of the scripture, especially when one takes into account the fact that these words were being directed towards Pharisees who were murmuring about Christ consorting with sinners.
There is a website Greekbible.com that gives the greek text for scriptures along with a variety of possible meanings for each word. Curious as to if this site could help me resolve my concerns with the scripture I decided to try it out. What I learned completely changed the scripture for me. The word that is often translated as righteous is, δίκαιος,a. The word "righteous" is a perfectly acceptable translation for this word, but Greekbible.com also says that another possible translation is "self-righteous."
Before I continue I would just like to say that I understand that it is entirely possible that Jesus truly meant for the word to be righteous. But consider with me for a second the implications if the word had actually been intended to be "self-righteous." If this is the case, Christ is giving a warning to us. He is saying that it is better to be a sinner and recognize ones sins and come unto him, than it is to be a person who professes the name of the Lord and believes themselves to not need repentance. This teaching ties in perfectly with Christ's words in Matthew 7 where Christ declares that not everyone who says "Lord, Lord"  will be accepted into the kingdom of heaven. Further it also is a much clearer answer to the murmurings of the Pharisees. Christ is not only telling the Pharisees why he is spending his time among the sinners, but he is also telling the Pharisees that their attitude of self-righteousness will do them no good in heaven.
If looked at it this way I believe it is fair to say that God does not find more joy in the repentant sinner than he does in the loyal servant, I think they all find equal joy in each other.
I sincerely hope that if you made it this far, that you found it worth your time to read it. But more than anything I hope you can see that if there are scriptural passages that bother you, with some searching and pondering you can come to an answer.