I love fruits!
But I don't know which one, because it depends on the time/circumstance, and also the form. Like lemons are golden gifts from heavens, but they're usually better in juice form (can also eat raw, but not common); oranges and tangerines are awesome too, and you can make juice as well; grapes are insane, but I don't eat as many now because they have a bit more of sugars (and I already eat other fruits); good red apples are also between my favourites (if they're good, some are not as much); persimmons can be top-1 depending on the day; bananas and cherries (if in the mood); screw it, mangos too.
Also wow, no one made a joke about watermelons, surprising!