Let me count the ways. Actually, there are way too many reasons to count. I love using multiple cursors in Sublime Text, especially for writing LaTeX. Just one example: quickly counting columns in a table (or quickly counting anything I've selected).
<img src="/img/img.png" alt=""/>
So without using any brain power at all, I know I have 9 total columns, 8 of which are right-aligned. Make tables all day, and see if this isn't helpful.