There are people who like to break into other people’s systems as a hobby.
It is for them a challenge, and sometimes they don’t see the wider picture that it can do harm. They just have a lot of time on their hands.
Everything in life has its challenges. Yes it can do harm, but the challenge is to get bigger and better software, hardware etc.
What will life be without challenges?
It is good if Network administrators can challenge the hackers by trying to get the best possible ways to stop what they are doing.
Too much ongoing information is freely available how to be a hacker, I also agree that there is too much information available.
We cant stop them from breaking in, because as we find new ways, they also find new ways.
The best thing to do: Study everything what they are doing, and find ways to make them stop.