Slight UI and Windows API differences, and of course the fact that MS intends to stop offering security patches for Vista next year.
Yes, Vista had a lot of issues at the start, but so did Windows 8. It was a big jump, but had the edges smoothed off a year or so later.
Many disagree with you as to whether these things are or should be rights. Some believe that people should be left to starve or freeze to death if they are unwilling or unable to work. (This viewpoint is not uniquely American.)
Deriding people who hold such views for their lack of compassion is non-productive. To win them over, it may be more effective to show how helping the poor benefits them - if indeed it does. For example, public health care benefits everyone who has direct or indirect contact with the public - even the rich - through the prevention of epidemics.
In the Simpsons, the local school puts on a play ("The Nice Man Giveth") to show Mr Burns the personal value of education, when poorly-educated students accidentally serve him rat poison, can't read a map to drive him to hospital, and fail to operate correctly on him. While it does not work in that particular instance, perhaps those who seek funding from the public could do a better job of explaining why the public should care.
New systems generate new problems.