SVG provides elements for things you're going to individually address with XPath or JavaScript. Points are less likely to be manipulated that way, so it's OK to

SVG provides elements for things you're going to individually address with XPath or JavaScript. Points are less likely to be manipulated that way, so it's OK to stop using XML to mark up the structure here. Many other data types, such as time, HTTP or email addresses also have structure, but you normally don't explicitly mark it up because they're trivial to parse.