My opinion, as a non-programmer, but who works in the IT field and occasionally writes code, is that it is easier to find and identify code that does not do precisely what you want it to do, than it is to write all of the code from scratch.

It saves me a lot of time and effort in, like, laying out the cases and structures and files and subsections and classes that I would have otherwise spent, which are mostly pointless wasted time, and then instead allows me ro focus on what actually needs to accomplish the output I was looking for.

To be fair, once again, I am not a competent programmer at all.

Using these tools merely allows me to accomplish things that I would not have otherwise been able to accomplish on my own without a much larger investment of time and effort.