Wanting the Lord’s Kingdom (Psalm 122; LD 48)

When we talk about the Kingdom of God we normally associate the Kingdom of God as being something that is present here and now.  So, if the Kingdom is present here and now then why would we ask the Lord for the Kingdom to come?  The Lord will establish His kingdom despite any forces that may stand against it.  So, what does it mean that we ask for the Lord’s kingdom to come?