I would always add a tiny splash of water to any whisky, to release the flavours and aromas.
I tend to get whisky as a Christmas present, so I'm not always in control of what ends up in my drinks cupboard. A couple of cask-strength bottles I've been given, I never really found the sweet spot in terms of an optimum flavour/strength. And they were too fiery and spirited to drink at the strength they came at, whereas most malts at 40% are drinkable pretty much as they are. Sometimes you want to just drink whisky, not dick about with it trying to render it drinkable.
Always thought it was a bit like buying part-baked baguettes or something. Why pay more money for an arguably less finished product, when you could have bought the standard-issue malt and had a highly-skilled connoisseur do the work for you?