I see this comment and feel so bad for past you!
Why are we treating all sugars as the same? They are not the same.
Some baked goods have sugar in order to feed yeast, rather than humans... Pizza dough, bagels, croissants. Yes these all come in dessert varieties, but it's not the default option.
Especially when you start getting to dumping on fresh fruit, it's like, no, please don't commit yourself to a bland beige life like that! Plants are masters of poisons and trickery, e.g. capsaicin (what makes peppers spicy) makes our mouths burn, but not the mouths of birds—who spread their seeds. Plants use fructose specifically because it's not dextrose and therefore it's hard for bacteria to digest: because they want us to eat this fruit and scatter the pit. Indeed they make the fruit sweet rather rapidly, “now now, it's ready now!”, to signal an optimal “it’s not poisonous! now you-scratch-my-back-I’ll-scratch-yours” moment to us.
Plants even look out for our longer-term health, those bright colors that we find so attractive are usually signaling to us these really important antioxidants that we need. As long as we don't freeze or puree the cell walls into oblivion, the resulting fiber traps some sugars and feeds it not to us but to our gut bacteria, who then don't starve and eat our GI linings...
“let's not eat foods that I know are healthy, to satisfy arbitrary rules I made up to keep myself healthy”... really?
So if zero tolerance is out, what remains?
• Set a low sugar target, “no more than 10% of my calories from sugars.”
• Prefer stuff with a shelf life. If it has an expiration date rather than a nutrition label, great!
• Don't worry about the natural sugar in yogurt, the lactose, unless you're lactose-intolerant. But don't buy the flavored versions as they are sugary enough to classify as desserts for breakfast. Instead do what the Dutch do—buy the plain stuff and cut the sour yourself with added whole grains and fresh fruit.
• “Don't even let it in your house” the other stuff. Guilty pleasures for me include chocolate and jam, I try to make sure that I don't have these in-stock...
• The grocer is a pilgrimage. What I mean is, it's tempting to zigzag your way through and see everything, and this is also why shopping takes forever! But pilgrims usually make a big walk around a structure before diving into the middle for a brief flirtation/unveiling of divinity. A good grocery run too walks around the aisles at the edges, fresh fruit and veg, fresh baked goods, meat and poultry, dairy... And it makes targeted trips into the middle only for things that it needs. You've got a list of the things you'll dip into the middle for, after all, and if your grocery trips are short then if you miss something, you can take another short grocery trip later in the week and still save time and money. Small batch sizes, lean manufacturing!