I guess i'll jump on the WTC hate bandwagon too, cuz why not right?
I can see why some people would like the twins don't get me wrong, they are not the worst buildings (by modern architecture standards anyway) I have ever seen, but I just really never liked them.
Let's start with the most glaring flaw for me atleast, they were too overbearing. Their sheer massiveness and bulk really makes the pedestrian feel quite intimidated (well atleast I felt that way), i'll give the architect kudos for attempting to fix this by adding a massive plaza. However the plaza further enhances the problem, because while the rest of Lower Manhattan is relatively dense and compact the trade center was just FLIPPIN MASSIVE, it felt incredibly jarring to me.
I won't really complain about them being just simple boxes since that was and still is kinda the style now and while I am not very fond of it loads of people have already pointed that out.
However I will complain about the colors. Ugh, the grey on them was just awfully depressing. Especially in their later life, those exterior beams REALLY needed a good wash. Seriously from far away it did not even look like they had windows, they just looked like giant blocks of concrete.
Anyways, this has been my fairly long, biased and one sided rant about the twins. Bring on the hate train!