The IMC rating isn't about blasting off in rotten weather. It's about learning properly the limitations of flying SEP in marginal wx and how to avoid situations beyond your and the a/c's capabilities. In extremis, it's also a get-you-home service if the wx does turn worse than the forecast.
Oh no not that one again !!
The IMCR is a perfectly good privilege which is every bit as good as the full IR, within the rather limited legal privileges for IFR (UK only, no Class A, 1800m+ vis for departure/arrival).
Ultimately, it all depends on how well equipped the plane is and how current you are. Loads of IR holders only just manage to keep their IR renewed with the annual check; are they good current pilots? Of course not.