"I bought the Nikon D7000 with the 18-105 and kit 4 days ago on 5/22/2011 and a great many of my pictures are out of focus.
I find the issue to be worse with any use of the flash or low light condition."
You bought the camera 4 days ago, you have been playing around with the settings, and you have out of focus probelms in low light:
a great many of your pictures are out of focus, not all of them.
and the problem is the camera?
"I own other Nikons. Canons a Roliflex and a Hasselblad and there is 100% something wrong with the D7000 that I own."
why? owining others cameras does not mean that you know everything about a new camera. stress new.
"I feel sorry for others who have the D7000. There are way too many issues to keep this product and then have send it in and spend money on shipping "IF" they can even fix the issues. "
Please understand that the people who have issuses with the D7000 are the few, and many of the problems simply arise from the user not taking time to learn the camera.
It is a fact of camera life that with most cameras, the more expensive they become the less user friendly they are, therefore folks buy expensive cameras expecting better pictures, end up being disappointed, and get problems with them. There are cameras that come up for sale on craigslist with the owner saying that the camera is for sale because it is just too much for them.
try resetting the camera and take pictures without changing the setings, and after you are comfortable with what, make changes gently, jumping in and making a lot of changes on a camera that is new to you could turn your face red when you return it to find out there is nothing wrong with it.
Also, taking pictures in low light, remember to get sharp pictures you will need a tripod and the camera will not focus if the object is out of the distance of the autofocus lamp.
flash use, it will take too long to explain, iso, distance, flash power.
I agree with you, send it back, get something easier.