Game would be insufferably boring. Lets face it, racing over and over and over or doing missions over and over and over, only to end up with a mid level apt in a month and 2 cars isn't fun for most. Being able to do what ever you want, when ever you want is. Lets face it, in a game where the whole premise is to become a criminal success, glitching actually seems to fit the game.
Plus some of the things like paint and visual car mods cost way too much, it's not fun thinking you can either buy ammo or a sweet color for your ride.
No no no.
Your obviously an impatient phag.
It's way more gratifying earning something that's difficult then having your mom serve it to you on a golden platter ala glitchers