Totally agree. I've seen every Android device hang and reboot itself at least once. I've seen iOS devices (both iPad and iPhone + iPods) freeze, requiring a certain key combination to be held down to switch them off then power them back on, I used to get Macs crashing all the time when video editing (very annoying), Windows when flaky software took the whole OS down (doesn't normally happen with current versions thankfully). PS3, 360, PSP, Wii.. etc have all hung and rebooted themselves at some point. Amiga's were great at crashing with the famous flashing red screen.. but none can beat Windows 3.1 and 95.. those were spectacular.
I've even had my car's computer screen crash and reboot itself. Very worrying when it happened. Driving along and suddenly the main central display when blank and the car's mileage reverted to KM, As soon as it had rebooted it changed back.
Anyone who reckons a computer based system is 100% robust, reliable and never crashes just hasn't witnessed it yet.