XML is a solution looking for a problem. The big mistake is thinking that data interchange is the problem. I have a data file to send that has two formats available, csv and xml, one is quick and easy to write, export and import as the format and schema are well documented and produces a file of about 4MB. The other is slow to produce, difficult to code and the schema is hard to understand, it is also slow to import and produces a file of about 22MB. You've guessed it the first is a CSV and the second is XML.

Data exchanges do not need to be human readable, they need to be machine readable, and for that small and fast are key, even EDIFACT is better than XML.

This doesn't mean I haven't learnt it, one day it will find the problem it is looking to be a solution to.