We design such junk mostly because of the weird aerodynamics...
KSP aerodynamics is frustrating in several ways, my personal worst experience in KSP was when I unlocked Mk2 parts for the first time, he description said:
Which is a terrible lie, I feel myself compelled to fill a bug about Mk2 parts, if I had been warned before, if at least the description was like:
And then I unlocked Mk3 parts, which are about as bad as Mk2, I was expeting it this time.