I don't know if I would call relations between uncle and niece incest. In some parts of the US it is common for cousins to marry. Not a big deal. Although you usually hear banjo's when it happens and there is a trailer park near by. but that what happens. I would call the taboo on uncles and nieces a minor, Mearly a raised Eyebrow.
Incest is always been a favorite fantasy for me. Don't know why. Never was abused never had any one take liberty's with me nor did I take liberty's with any one that I knew.
But I love to read about Incest. But I am aware that incest should never be forced and can cause great harm psychologically and emotionally.(sorry if the spell checker missed those)
You will always hear of the emotional wreckage that incest causes but you rarely hear of the cases where incest was a positive thing.
It is still taboo. But if your in the trailer park and the banjo is in the corner then go with the flow.