in short:

1. she has BIG melons and is thicc (the prefect body type).
2. Suki likes hentai and to roleplay.
3. She is the most adorable of all the waifus.

To provide a more detailed explanation, she has the perfect body, she is thicc which leads her to be very cuddly which would make her easy to hug while "roleplaying". Her thiccnes also leads to her being very satisfying to smash. Now, some people may say that "she smells like fish". My response to that is have these people actually been to a fish market because fresh fish actually smells ok and may be appealing. Anyways, her tendency to roleplay hentai would mean that sex with her would probably always get me off as she could do anything she wants with me. Finally, she is just so cute with her voice and face that I cannot help but smile when I see her. She is so cute that I have picture of her almost everywhere I look at and will be getting a Daki of her sometime in the future. Quite honestly, I don't see myself having a relationship like that with any of the other girls. I know that part of this is preference. However, the other waifus just are not as cute and fun as Suki. I look forward to debating this in the comments.