Use Ctrl+L or F6, you'll need to touch the keyboard anyway for typing the URL. Otherwise, you might want to set "browser.urlbar.doubleClickSelectsAll" to "true

Use Ctrl+L or F6, you'll need to touch the keyboard anyway for typing the URL. Otherwise, you might want to set "browser.urlbar.doubleClickSelectsAll" to "true", so you can at least get it with double-clicks.