If you feel like you "wasted your time" just because you didn't make it in, then perhaps re-evaluation of your motives is in order. Plenty of pictures were "worthy" but didn't make it in for a number of reasons. MOST NOTABLY being resolution requirements.
Also, note that the pictures that DID make it in are those chosen by a group of YOUR PEERS! If you didn't make it in, or someone else did that you feel isn't worthy, then it was so chosen based on an average vote of a diverse selection of judges. They aren't "all" wrong.
Show your support and purchase a calendar. Shoot some more pictures and submit them for next year. Make it? great. If not, repeat steps above. That's all there is to it, folks. If you aren't satisfied with the turn out, it is in YOUR HANDS to submit something that is a shoe-in.