camioneur, I get the sense that you didn't want to like firefox before you started - that's fine, if you don't like it, don't use it.
Your remark "it takes 2 hands to do what you can do with 1 in IE" doesn't really make sense, because
(a) you couldn't do it at all in IE if Firefox didn't exist: IE7 (which was the first IE to allow tabbed browsing) was only produced in response to the popularity of Firefox.
(b) What happens if you want to open the new page in the same tab?
Firefox also has many other advantages of IE, but as I said, it's not for everyone; some people have a natural hostility to things with which they are not familiar. Thanks to Firefox, you have a choice which didn't exist before, but you don't have to take it.
Avant is just IE in a skin