Fruit really depends what your dietary goal is. Fruit do provide vitamins, but as you are aware moist fruit is sweet for a reason and that is the natural sugar in them.
If like most on these boards you are active that is not an issue. You get the vitamins and you'll burn that sugar through exercise. If you are less active that natural sugar from the fruit will be stored as fat, so if weight loss is your goal it's not the best option.
It's part of the reason the five a day campaign is laughable. It's doesn't distinguish anything of value and gives a very generic and useless message. That also allows companies to jump on board claiming their product offers a portion of their "five a day". Most notably fruit juice drinks and smoothies, which people eat as they view them as healthy and some misguided people see that as a good lose weight option when they are actually loaded with sugar.
Is fruit bad for you, well no. If you want to lose weight should you be eating lots of fruit, again no.
And there lies the problem. People eat what they see as healthy choices trying to lose weight, but those choices are often hideously wrong if that is your objective. The recent political babbling once again went on about labelling fat contents in food to make things easier for people to make an informed choice to stave of the obesity epidemic, when all recent studies suggest high fat diets aid weight loss far more than high sugar diets (which pretty much includes how your body deals with excess carbohydrates).
Personally I still think we are many years away from fully understanding how our bodies use the fuel we provide them, but it does seem to be coming more apparent for the last thirty years or so we've been barking up the wrong tree in terms of what in our diets is making people so fat.
