overclocking allows you to do more:
overclocked CPUs keep a consistent 60fps with Skyrim/GTA 4 mods
overclocked CPUs run flight simulators better than their stock counterparts
overclocked CPUs run Wii and PS2 emulators at almost double the performance of stock
overclocked CPUs last years after stock counterparts are obsolete. They also keep forum users calm and relaxed, unlike users of stock, cheap CPUs (
See here).
If more is not required, then overclocking is pointless. Just wanted to have all the info out there.