Firefox's prompts are a pain in the neck. "Do you want to install the latest Firefox?" No! I want to browse the web. That's why I opened my browser. Every time

Firefox's prompts are a pain in the neck. "Do you want to install the latest Firefox?" No! I want to browse the web. That's why I opened my browser. Every time I get that message I groan because I know I should upgrade but I don't want to sit through a download, install and browser restart. I always thought a "upgrade Firefox on next restart" checkbox which downloaded in the background and kicked off the installer on browser shutdown would be nice.