I don't like the uploading process either but it is sort of an important part of the process.

Entering the metadata into the image itself so it is automatically populated during the submission process (on some sites) saves some work.

Sometimes you have to put in a bit of effort to get paid. 

As someone else said: the good thing about indexing it that I learn lot of things and new words.
Most of the times I see it as an enrichment of my personal vocabulary and since I am not a native English speaker for me it is almost an advanced foreign language course 
...And  actually  for me the entire microstock  in general is a great school of photography, thanks to the hated-but-useful rejections bythe reviewers.
So until I still learn something I don't get really bored...

Except with large batches, of course... But for now I have limited time to dedicate to micro ( new dad here  and my little brand new model need care as well as photoshoots eheh )..So for now is a matter of small batches (except when I subscribe to a new agency)