Control. Squarespace and Wix look nice but the moment you need to do something they didn't anticipate you're stuck. I run 31 automation agents that publish content, create tracking links, update pages, and manage media — all through API calls. Try doing that on Squarespace. WordPress lets me own everything — the code, the data, the hosting, the integrations. If I want to wire my site up to an AI content pipeline that publishes three posts a day with custom affiliate links and branded Pinterest pins, WordPress says yes. Everything else says "upgrade to our enterprise plan and maybe."