My Pet and Currency tabs are missing.

Q u o t e:
yes to both of the above. I even uninstalled and reinstalled the enitre program.

That is quite odd. This is almost certainly a display error of some sort, and a user interface reset should have resolved it.

May I ask if you tried accessing these tabs on your character with no addons installed? I know that you reinstalled World of Warcraft, but you did not specify if you reinstalled your Addons prior to testing this issue.

Also, when you reset your User Interface using the steps quoted above, did you close World of Warcraft prior to doing so?

Edit: Testing reveals that this is definitely a display issue, and that your character should display both a pet tab as well as a currency tab currently.

A full User Interface reset, accomplished by carefully following these steps, really should resolve the matter:

Q u o t e:

1) *IMPORTANT* Exit the World of Warcraft to your desktop by logging out of the game and exiting. If World of Warcraft isn't closed, then these steps won't have the desired effect.

2) If you used an "installer" for a custom UI, see if it has an "uninstaller" and use it.

3) Inside the World of Warcraft Program Folder, delete the "WTF," "Cache," and "Interface" folders.

4) Restart your computer.

5) Please do not reinstall Addons prior to testing the issue you were experiencing.

6) Make sure that you are using WOW.EXE or LAUNCHER.EXE to start the game. Please do not run any UI installers beforehand, as we want to eliminate them as part of the issue.

7) Upon launching the game, you should see the Intro cinematic movie and be prompted to agree to the Terms of Use. Once you authenticate past the login screen, the “AddOns” button should no longer be visible at the lower left corner of the character selection screen. Both points mentioned previously must hold true if you should complete the aforementioned steps correctly.

I missed 'on all but the level 80 toon' in the original post. It's entirely possible that your other characters had not learned pets, nor earned currency aside from gold, silver or copper.

Please forgive the oversight, that was very much my error =(.