Anti-matter is just as stable as normal matter, just as long as it stays seperate from normal matter.
Its stable enough that infact you could have an anti-matter earth, or Antimatter Universe infact. Just as-long as antimatter does not contact normal matter its as stable as its chiral normal matter counterpart.
I didn't want to be that accurate.
But if you wish:
"Think of anti-protons as another form of hydrogen-ions, with all its properties."
Better?
Jealous? Nothing wrong with being affiliated with oneself.
It is only destructive if you let it touch matter. When it does touch matter, it releases a burst of gamma rays and neutrinos.