Well I've worn out polybushes much quicker than VW OEM bushes - good quality ones, too.
The fact that the original bushes have taken 10-20 years to wear out might indicate that they're not rubbish, but people don't want to see it that way.
Polybushes really do deteriorate over time and you'd be some sort of a moron to think they didn't.
A part that never wears? I'll have ten, please!