This ridiculous assertion that this solar system will be bombarded with debris as it passes through the galactic plain is completely unfounded or supported by the evidence. This cycle of the solar system is well understood and has been well studied. We are gravitationally bound to this planet as it is to the sun as it is to the galactic mass. In a cluster of galaxies, If you want to worry about some thing try working out where it might be safe to live.

Away from immanent volcanic eruption.

Away from active tectonic plat movement.

Away from the open sea where a tsunami might get me.

On stable flat land.

Not near to a flood prone river.

Not in a war zone.

Away from extremest groups activates.

In a temperate weather zone.

On a planet that is not under imminent danger from a novering star.

Protected from the possibility of impacting space debris.

Or just living with a nagging wife.

THIS thing called life is fraught with risk.

Only worry about what you can fix. . . Sigh,