should I keep it as is or break it up and get rid of the ripped one? Thanks.
Depends on if you collect postage stamps for personal beauty (Pages for eye appeal) or if you prefer as a "Philatelist" and collect for information.
Nothing at all wrong with either, it's your own personal bent.
I find no problem with collecting ripped or torn stamps, I have no problem with blank spaces on my Steiner sheets, but that's just me.
You have to live with your own collection.
I'd be happy with that "plate block" until another better example comes along.
I prefer the mantra to keep all stamps in multiples "as found"
I kinda feel ripping stamps apart, or trashing them is vandalism,
yet I have done both in the past.
What you do, whilst alone in your hobby, will define you
you will know if you are a stamp ripper or not, or if you treat your collection with dignity.
Again nothing wrong with either,
Stamp collecting is the ultimate democracy.
I soaked this example from brown tatty carton paper in late 2008,
I could of ripped one off as an example of a puncture,
I was the feeling that was kinda wrong, so I kept it, as is.
11 years later, it has brought delight from a dedicated perfin collector,
and will make it into the latest catalogue.
It proves the sheet was folded during puncture, and a wonky die.
I felt vindicated, and joyous on the result.