First off I don't give a F how or why anyone fishes.
But...I do find the differences interesting. What plugboots just mentioned is a big part of why I've been enjoying streamer fishing so much lately.
You see a fish rise and he has given up his location making it easier. When I'm fishing streamers I'm not just blindly casting all over the place. It's a (hopefully) educated guess about where the big, aggressive fish are. It feels a bit like hunting and stalking prey.