An argument for hard top convertible cars?

I have been arguing a lot against the current trend to build convertibles with hard tops for quite a number of reasons:
1) Heavy
2) Complex (just think about all the hydraulics)
3) Bad weight distribution (where does the top sit when it's folded down?)
4) Design/look - fat end cars
However when I looked at this picture I had to admit that there are some proper advantages too having a hard fold-able top on your car. And I must also say that the new BMW Z4 actually looks quite sharp. But at the end of the day, a convertible should be driven with the top down and in most of the cases the fabric top should only be your last resort, so why carrying around all that metal and complexity?