>>12415575Existential threat Edit
If a more stable vacuum state were able to arise, the effects may vary from complete cessation of existing fundamental forces, elementary particles and structures comprising them, to subtle change in some cosmological parameters, mostly depending on potential difference between true and false vacuum. Some false vacuum decay scenarios are compatible with survival of structures like galaxies and stars[4][5] or even life[6] while others involve the full destruction of baryonic matter[7] or even immediate gravitational collapse of the universe
Basically, this would SUCK ;)