What's the biggest hidden cost of using a paint sprayer?

Across r/DIY, r/HomeImprovement, and woodworking threads, the consistent complaint is prep and cleanup time, not the sprayer itself. Masking windows, trim, floors, and adjacent surfaces can take longer than the painting, and thorough cleaning after every use is mandatory—dried paint inside the gun is the #1 cause of ruined finishes on the next job.