As a long distance runner and personal trainer, my favourite food is of course Carbs!!! I only eat good Carbs though, those on the left and rarely those on the right. 60-70% of my diet is good healthy Paleo OK natural Carbs. I exercise and I burn them off. The issue is when you don’t exercise enough and you eat too much of them, that’s when you gain weight.
Opinions widely range on Carbs, some promote them and some shun them. I eat them and I’m lean. Are they good or bad? They’re both. Depends which type of Carbs you eat!!!