They weren't, unless you consider punch cards and magnetic tape input/output difficult, which most users did not simply because that was the way it was done and they were used to doing it that way.
nothing no one trusted technology those days
Each computer generation had different characteristics. The first generation used vacuum tubes, the second used transistors, the third used integrated circuits, and the fourth uses microprocessors. The fifth generation is still developing and will use Artificial Intelligence.
computer use to magnetic disk which generation
roughly 1890 through 1960, it overlaps first and second generation electronic computers with some equipment still in use in the 1970s assisting third generation electronic computers for offline functions.
microprocessor
changes in available technologies to use to implement them with.
discrete transistors
The evolution of fourth generation of computer till date was the use of microchips as the memory capacity and this has helped in manufacturing of computer till date.
Magnetic drums
The features include: used integrated circuits, smaller in size compared to second generation computers, faster and more reliable, used high level language, magnetic core and solid states as main storage, reduced computational time and had low maintenance cost, input and output became more sophisticated. They were developed during the period of 1964 to 1971.
As of 2014, the third generation firewall is the most commonly one used. A firewall is used as an added protection for your computer.
There are a variety of different hardwares and softwares that can be used in different computers.