I'm a software engineer/Computer repairman. I plant harmless bugs into those "mentally retarded" that disrupt their software (never harming it, of course) then charge them double for multiple vists as demand for patches keeps piling up. Several customers tried other places to fix their code, but those morons can never correct it properly, not to mention since they're always carrying a wireless device I can "hop" to their devices seamlessly and they'll have to crawling back to me even if the customers decide to throw their "broken" trash away.
You know how that old adage goes "a fool and his money are soon parted.", and well, let's just say I'm rich now while they're not.