The bottom line for both is that unless you devote your life to the subject, you can never know them well enough. They can make you happy and miserable at the same time. But while people murder their spouses, rarely do they murder their boats or their computers. Cars maybe, but not boats. A computer is an amalgamated evolution of unrelated and incompatible parts assembled by child geniuses.
Computers do a little bit of everything but nothing well.
Or for very long. I purchased my first PC in 1982, a Radio Shack Model 2. It had 16 k RAM and 4mb hard drive. Sixteen years later I am sitting here in an office surrounded by computer equipment that costs a fortune and takes up far too much of my time just keeping the whole bundle of chips and million lines of code working right. If I didn't enjoy playing around with these things, I would readily admit that they make my life not easier but far more difficult.