They WILL be great. They'll do exactly what YOU need them to do, and nothing else.
Software at present is a disaster, partly because we're just piling on complexity all the time, thinking only of the benefits and never of the huge downsides ("fighting with tools").
Everyone has slightly different needs, so that is exactly what creates the complexity disaster you are talking about. I think that being more willing to re-use the existing work of past developers actually works to reduce this problem.
In a team of course it would be different - unless I perfectly document my own code, my colleagues would be better off with something they can actually google.