Good to see a lot of people here are on board with the thought process regarding the amount of sugar in fruits. There's a reason why when diabetics have low blood sugar they are often given orange juice to bring it back up.
I just skimmed through the thread, but sugar has a lot of negative effects on energy, fat storage, and increased appetite. There's really little to no need for them in the diet. They spoke blood sugar levels and then crash quickly, thus creating a loss of energy and increased appetite. Total opposite of good complex carbs such as oatmeal.
I typically stay away from most sugars. Most days I go with nearly zero sugar and don't think twice. I will have ice cream maybe once a week.
I am very into bodybuilding and at one point was having an incredibly hard time gaining weight. I was about 200lbs and around 10% BF on my 5'10 frame, and stuck. I used candy and such to push me over the jump because I simply couldn't consume any more "healthy" food. I was having 300g protein/day and 300-400g carbs/day all from oatmeal, rice, and potatoes. That is a LOT of food. I started adding in about 200g carbs/day of starbursts. Over the year or so it took, I got up to about 220lbs with the same body fat. However, I underestimated the effects the sugar would have on my body. I started experiencing some incredibly scary blood sugar crashes. I thought it was anxiety at first until I got a blood sugar monitor. Needless to say, that had to stop. I don't experience those anymore as I don't have much sugar, but it was still a very eye opening experience.