The point would be that you can run anything the real amiga can run without messing with an emulater screen for each app/game
Emulating is fine if you never used the real thing. Have you ever played battlezone in the arcade and then played it on an emulater? Its not the same. if you were not old enough to experience the real thing then you don't have a frame of reference as to what the game as originaly sold was like to know if the emulated version is 100% or not (let alone as fun to play without the original video/controls).