Does Heaven matter now?

Let's start with some common ideas of heaven.  First of all, it is the opposite of hell.  How many people have the "I'll choose heaven, because I certainly don't want hell" mentality?  Second, it is a far off and distant place that we hope to get to one day, but we don't spend too much time worrying about it right now.  Third, it is a mythologically beautiful place with gold streets and glittering mansions.  Okay, I could keep going, but I think everybody is in the mind set at this point.  What is heaven, really? Well, what we KNOW is that heaven is with God, and it is eternal joy.  Do we need to know much else, really?  I don't think heaven has streets of gold or glittering mansions.  I think those are awesome ways to get worldy and earthly creatures to want to be there, or to understand the worth of heaven, but there is no materialistic desire in heaven, and streets of gold and mansions wouldn't really matter or mean anything to anyone there. 
So, back to my original question, does Heaven matter right now?  Should we be concerned with Heaven in our day to day earthly lives?  Let me ask it this way...do the Braves care while they are playing the game if they win in the end?  While you are killing yourselves to get a good GPA in college, do you care if you graduate and get a job?  What is the POINT if your eye is not on the prize?
How would you feel if you passed all of your classes, and then found that there was no degree at the end?  What a horrible trick that would be.  Dr. Kreeft said, "Heaven gives life meaning.  Without Heaven, life is a dirty trick." Let's think about that for a moment.
What we should do, I think, is focus on Heaven all the time.  Everything we do, should be with Heaven in mind.  Why? Not because it is the prize of gold streets and glittering mansions, but because it is eternity with God.  We, as Christians, do the things we do (hopefully) because we love God, and we want to bring others into communion with us, and because we want to world to know His grace and love.  We all wait "in joyful hope for the coming of our savior, Jesus Christ" so that we might join all of the saints of the earth in Heaven eternally.  If you are living your life with that goal, then you can't be selfish.  If you are continually focused on heaven, you can't help but want to do what is right for others.  If you are continually focused on heaven, then you will seek to proclaim Jesus with every breath, and to love and to serve others unconditionally.  "Life is precious, and earth is great, BECAUSE heaven is at the end...all things in earth that don't get boring are images of Heaven."  (Dr. Peter Kreeft)