I despise that sort of system. None of the choices ever seem to be appropriate for what I think or feel.
Star systems avoid inspiring this frustration in me by giving me the freedom to imagine labels that I think fit how I feel or think.
And in statistical circles, this is called survey bias (rating bias).
If you think a 4 is "awesome", and another person thinks that it means "pretty good", and this effect is widespread, it will result in a biased survey that is difficult to interpret.