Well, of course it's easier to have a single off-the-shelf solution which solves N things than have to cook up the same solution using separate independent piec

Well, of course it's easier to have a single off-the-shelf solution which solves N things than have to cook up the same solution using separate independent pieces of software. But I would argue it's easier to debug and modify each piece separately if the divide between them is clear and the interface layer is at least somehow contained in one place than to debug/extend monolithic software solution.