If every experience of recieving the sacrament of holy communion is the same every time, then it can lead to becoming routine and meaningless. How terrible that would be if we only saw Jesus the same way, all the time. Don't get me wrong, as I know that he is a constant. But if we fail to see His constant revelation in our lives, then we miss the opportunity to get the most of every time we dine/commune with Him. He is forever God made man, but we should always be seeking to know Him better, and learn more from Him every time we are invited to His table.
The key word is: Invited. When a host invites us to a banquet, do we rehash the same old stuff? Do we tell the same stories we've told time and again? If we want to be invited back, we don't. If we want our company to be as compelling as the invitation suggests, then we should feel honored to bring something new, something fresh to the banquet. So it is with holy communion. We're not the same as we were the last time we were invited. Nor, has our host revealed everything that can ever be known about Him.
A good host is engaging. A good guest is engaging. Do we interact in a fresh manner with the very presence of God, in Jesus Christ, every time we come to His banquet? If we want it to be a dinner that we'll be talking about the next day...we should.