Dear walls in the livingroom: You started off a crazy hideous yellow. It was not your fault. I did not blame you.

We tried to repaint you. We changed our mind about the color several times. We noticed bad patches in you and tried to fix you. We eventually decided we needed to completely refinish all of you.
But now, after spending months stripping paint, sanding, skim-coating, sanding, etc., when we apply our lovely wonderful primer that worked great the first time, you are bubbling... or maybe it's blistering:
Why? Don't you want to be a lovely charcoal grey with a perfectly smooth finish and be able to relax and enjoy your paint color instead of being constantly accosted by orbital sanders and mud knives and chemicals?