Different people have different dirtiness thresholds.  Some people are neat freaks and must habitually clean.  Some people are allergic to dust, so it's in their best interest to have a clean living space.  But other people have chronically dirty houses, and they're completely ok with that.  When a person with a low dirtiness threshold (LDT) visits the home of a person with a high dirtiness threshold (HDT), feelings of disgust and judgmental reactions follow.  The LDT thinks, "How can a person even live in this squalid pit?"  Meanwhile, the HDT thinks, "Meh, things are looking pretty good around here."  In all honesty, people that continually live in filth are more likely to live longer, healthier lives simply because their immune systems have been built up for so long that they can handle just about anything that comes their way.  Or at least that's what they think. 

My dirtiness threshold is somewhere between low and medium, but it constantly fluctuates.  I like being clean and living in clean conditions.  But at the same time, there's just so much kitty litter and cat hair I can clean up before I start to ignore its accumulation on my couch and bed.  So I gradually lower my standards.  Instead of cleaning the counter and the floor in the kitchen, I simply clean the counter and put the remnants on the floor.  Hey, one clean thing is better than none, right?  And most times, the decision to clean comes down to a battle between laziness and my dirtiness threshold.  Sure my threshold is a 3/10 and the current dirtiness level is a 6/10, but I just want to sit around on the couch and do nothing sometimes.  I'll clean later. #psychology