I wrote a long post about why Glitched Cars are bad, too lazy to find it now (ask me later) so to paraphrase:
-Ruins the economy
-Makes Cash Cards worthless
Any time you can use an exploit to gain a monetary value or something worth a monetary value, then you are receiving an advantage. I for one would love nothing less than for Rockstar to publicly ban and humiliate every 10th cheater as a warning to cheaters everywhere. Perhaps once I spend $1000 on cash cards I might have some weight to propose that idea, until then one can dream.
It's a game.. Let people do what they want. If doing glitches in a video game prevents you from being able to sleep at night, Don't do them. But don't be an asshole and act like you're better than someone because they glitch and you play 'legit'. In reality, It doesn't matter whatsoever. I'll enjoy my millions of dollars that never decrease and SP to MP glitched cars with North Yankton plates, While you continue to bitch about it. kthxbai.
I already wrote a long rant on why glitching affects the game, look for the thread "an argument for cash cards". Next time please do not act self righteous because you have to cheat in order to play a game. It does not make you look like a rebel, it makes you look like a chump.
kthxbai went out of style about two years ago.