+1
I had one of my most enjoyable flights recently using my IMC - it was a short hop from Cranfield (where I'd been staying nearby for a few days) back home to Cambridge. It was a miserable day, with the cloudbase at Cranfield being 6-700 feet or so - did an IFR departure into that, popping out at around 3000 feet into a clear sky with glorious sunshine, followed by an RNAV (GPS) approach onto 05 at Cambridge, popping back out the bottom at around 900' with the runway dead ahead of me.
It doesn't seem much when written down, but it left me on quite a buzz for the rest of the day as it was one of the first times I've done an approach 'for real' as opposed to for practice.
Even ignoring trips like that which would have been impossible without the IMC, the number of flights where I've been going to a VFR airfield, but gone through bits of cloud en route rather than having to avoid them or descend lower than would be ideal etc makes the rating worthwhile on its own.