Yep they could be better, but I bet if there was a homeowner forum people would be compaining about all the things that they had wrong, that just how we are.
I just finished building my house about 1.5 years ago, that I actually built with some subs. If I had all top of the line everything, my 2,600sq' house with a detached garage about the same would have been in the millions of $. But we had a buget as we did on our trailer purchase, so we have to make compromises.
We Pick what we feel we need better quality in and can deal with less in others. And yes I have had component problems in my house(a/c-A coil, top of the line dishwasher, gfi outlets and others). We live in a imperfect world and we have to accept it, as frustrating as it can be!
We need to be sure we are being all we can be, and maybe others will do the same!!