Everyone with a reasonable taste is horrified by pineapple on pizza. Ask an italien.
It may also be a regional thing - see, I wouldn't even know where to find an Information Technology alien to ask about it.
As others have suggested, the amount used can make a big difference to the overall flavour of the experience. Start with lower amounts and give your brain and mind some time to become familiar with its effects. Initial experiences can feel too confusing to be enjoyable. It can also be exhausting for your mind to try harder to make sense of things, and until you can let go and trust enough, this may also lead to unpleasant feelings as the cognitive system that is your brain is trying to make sense of these scrambled signals and hold onto your usual perception.
I'm talking about pineapple on pizza here, of course, but it could probably apply to ketamine as well.
