It depends. In many cases you would be right, in many other cases you wouldn't. It depends on many factors: - what is the problem? (some problems are really h

It depends. In many cases you would be right, in many other cases you wouldn't. It depends on many factors: - what is the problem? (some problems are really hard, some problems are trivial and just seem hard) - is developer experienced enough to build own solution? - are existing solutions good or badly written?(I often refrained from using existing solution when I looked on bloated code in it). - is solution suitable to project? ("too much bundle size", "doesn't support X", "not too configurable", "too slow", "too hard to use"). etc.