So would I, but Apple essentially considers separate Apple IDs as separate people.
As much as it makes sense to make both of them your own, since you created them, unfortunately Apple IDs cannot be "merged".
Don't give up though... try contacting iTunes Store Support and perhaps they could sort this out for you.
From Here http://support.apple.com/kb/HE37
I have multiple Apple IDs. Is there a way for me to merge them into a single Apple ID?
Apple IDs cannot be merged. You should use your preferred Apple ID from now on, but you can still access your purchased items such as music, movies, or software using your other Apple IDs.