to me it's everything everybody has already said here.
the benefits of hacking a ps3 hugely outweigh the negatives of not hacking it,
i think hacking a ps3 is like hacking a ps vita/psp/3ds etc,
you get so much more benefits in doing so that having a stock one that is limited to only a few locked things it can do,
whereas unlocked it can do so much more, expect it can't make you, your coffee yet.
think of hacking a system like BOTW case:
Unhacked system: you are stuck on the great Platueu (a limited area that you can't do much in)
hacked system: you can leave the Great plateueu and explore the great, great, great out outdoors that offer you so much more that you could possbly imgaine! .
to me hacking a system is like this expoloration in BOTW, from great plateu to greatness.