Actually IE concentrating more on security and the safety of the system so its slow and it is not that much slow if you have a updated version of IE according to your O.S.
As we are getting a latest and updated versions of IE, it represents that IE is trying its best and it is the best. But i too agree that Mozilla or chrome is more user friendly that is why most of the people prefer the Mozilla as its downloading speed and access speed is faster than the IE.
"People says 143. I say 444 i.e. Love Your Life"