Actually, that's pretty much how good sci-fi treats lasers. Try reading "Consider Phlebas" by Iain M. Banks, it has a rather good scene of liberal use of laser weapons. It's a good book in other ways too, at least as long as you can stand the blatant socialism. :)

In any case, I rather doubt laser weapons will get much use at ground level, if only because of rain/various kinds of active smoke you can use to defend yourself.