...you're hiking in a forest and your dog, being an idiot, decides that walking on thin ice is fun, and thus proceeds to fall through the ice into dirty, smelly, muddy, disgusting water up to her ears - and the thought of worrying about the interior of your vehicle never even crosses your mind. ("Hey, it's a Jeep - I'll just brush the mud off the seat afterwards.")
...you're spending an entire day in an action shooting sports competition and the weather is lousy - wet, windy and cold. So you pop the hatch, sit down under it with your girlfriend to get out of the rain and wind for a while and heat MREs on the floorboard of your cargo space. A built-in rain cover in your Jeep and a warm meal in your stomach - what could be better? Next shooter on the line!
...you regularly toss in the back two weeks worth of groceries, plenty of shooting gear, or other such items (in addition to the recovery, emergency and other gear that sits permanently in the Jeep) and never have to worry about running out of cargo space.
...you get cranky if life keeps you indoors and your Jeep on asphalt for a while.
...you try to negotiate with the folks who run the shooting range when they close the access road due to its poor condition. "Yes, I know there's weather damage - but I have four wheel drive, I don't mind!" Driving on a used-to-be-a-road = fun. Carrying the rifle bag, range bag, ammo box, target bag, etc. two klicks in the mud... not so much.
...your MK never remains clean for long. Even though you think that you've not managed to get to anywhere fun for ages, there's always some mysterious mud spray that after further contemplation might have come from that one teeny tiny little shortcut you sort of forgot you took.
...you've long since stopped worrying about reports of poor conditions when thinking about heading out. The only thing that matters anymore is whether you feel like going or not, and whether you have enough free time for it. You KNOW your Jeep can handle it!
...that damn list of modifications you want to do to your vehicle just keeps getting longer...
...minor scraping sounds from the undercarriage when off-roading don't really matter anymore. "Hmm, reckon' that there rock was higher than I thought... Oh well."
...the speaker panel of your lift gate has a gouge and stubborn soot stains from where you last packed the fire box of your tent. The rest of the plastic interior is likewise marked by other wilderness gear. The rear doors plastic is scraped from where you loaded and unloaded your fridge. You do not care about the scuff marks, as the trip was very much worth them.