I will always ship ItaSasu because it’s such a deep, emotional pairing. It’s a canon fact that Itachi was always worried about his little brother, loving only him and sparing him out of love. Sasuke only thought about Itachi during his years as an avenger. It’s easy for me to take that love and obsession to a higher level. It’s thrilling, forbidden and heartbreaking, but so incredible beautiful and meaningful.