- They're often only URL's which may not have titles or dates at all
- They're often not in any particular order (there's no reason for them to be chronological, so they frequently aren't)
- They're often paginated as well, where sitemap.xml just refers to multiple <sitemapindex> pages, so you can't Ctrl+F on a single page anyways
- You don't get one per-blog if there are multiple blogs on a domain
- You get all the other junk from the rest of a site if it's a blog that's part of a larger site
- They're often only URL's which may not have titles or dates at all
- They're often not in any particular order (there's no reason for them to be chronological, so they frequently aren't)
- They're often paginated as well, where sitemap.xml just refers to multiple <sitemapindex> pages, so you can't Ctrl+F on a single page anyways
- You don't get one per-blog if there are multiple blogs on a domain
- You get all the other junk from the rest of a site if it's a blog that's part of a larger site