I've been drinking decaf only, for health reasons, for nearly twenty years and it's proven really hit and miss, mostly miss but has improved a lot recently.
In the last few years as the coffee culture has really taken off here I've found some very nice decaf from the smaller roasteries, these are likely not exporting - Pilgrim, Mission, U Roast. I can't believe there aren't similar small independent outfits doing the same near you.
The way I found each of these was asking when I was served a good take away or drink in decaf which beans were used.
Before this my staple was Lavazza decaf
Also, I'd say it's not heresy. There can be a bit of snobbery about decaf definitely but my experience has always been that in coffee drinking cultures in Europe decaf is more or less readily available and often more than half decent. Thankfully that's now increasingly reflected in the UK market too