Same here, but I still can't get away with NOT using Firefox but only due to Firebug. I just can't get to grips with chrome's dev tools, but it may be a habit thing. And Firebug for Chrome is just "Lite" really.
2) You don't see a change of cursor when hovering over editable properties. People who never used firebug might have gotten used to this but for me it feels clunky.
3) No single click edit. On firebug you can start editing a property with a single click. Not so on chrome. This is even worse when editing styles. When single clicking a style you don't even see a visual indication that something happened... again feels clunky..
4)Too many tabs that are not bunched according to how often they are used.. I don't think people use Resources, Timeline, Profiles, Audits as often as they use the other tabs.
5) The information is presented in more readable way. When a break point is hit, chrome displays a bunch of tabs on right which are vertical (often empty - because they aren't relevant to this break point) and wasting precious vertical space..
6) Clutter, clutter and more clutter.. just too many sub windows cramped into one another affecting readability...
I know that most of these reasons are subjective and vary across developers but wanted make a list of my own reasons as I found my self trying to use chrome dev tools and always jumping back to firebug.
Only other thing I need/want is the FireQuery plugin to help with any jQuery development.
The problem is that I can't visually tell which checkboxes match which rules, because they're too far away. Even worse, the checkboxes only show up on hover, and disappear when you hover just one pixel to the right of them, because the hover area is set wrong. (At least on OSX.)
It's just all the little details the Firebug gets right, and Chrome doesn't seem to, but day after day, they add up.
I can only comment on 4), in that I use both Resources and Audits frequently. Resources more-so, I'm always clearing site-specific cookies/sessions. Audits is useful when trying to improve site speed, it has a lot of good advice.