Folks are absolutely going to look at this from an inappropriate angle here (cuz... duh... we're nerds).

The side of the fence you're on is directly proportional to how old you are. Neckbeards who want you to get off their lawns love XML (related: get off my lawn). And the "kids" will give a bajillion reasons why we are "technically" incorrect...

If you split hairs here... You've never lived in a world without XML (truly terrifying TBH).