Though I don't usually, I'll "weigh-in" on this one.
While it's all one's choice and taste, I like having full-range speakers as surrounds....and the 200w/ch there, too.

Sometimes I, too, listen in stereo (front L/R). Sometimes 5 ch. Sometimes 7ch. And I like being able to boost the surrounds for certain movies or music as I choose, knowing that I've got the power (though it's also about headroom).

In addition I and others have taken our old 4 ch live recordings (tape) and transposed them onto 4 ch of hard drive (not computer) machines...and...one of the neatest things is the placement of the four channels onto 4 dts tracks (i.e. Front L/R and Surround L/R). So in this case having full-range speakers and amps feeding the surrounds is happiness.