should I texture the ceiling in my bathroom with a shower?
Most new construction bathroom ceilings, with showers and/or baths, are textured.
Ceiling texture in a properly ventilated bathroom will last for decades bonded to the drywall without a problem.
Water coming in contact with ceiling texture or constant moisture will cause it to lose its bond with the drywall and begin to flake and fall off.
Damaged texture in a bathroom can be easily repaired either in a small section or for best results scraped off and the entire ceiling area resprayed.
An oil based sealer paint could be applied over knockdown, splatter or popcorn texture to seal in the bond and prevent moisture from damaging the texture. The paint can be rolled on or sprayed with a paint machine.