I, too, have tried hard to eliminate all sugar. We're not perfect, but we're way past the 80/20 principle of diet improvement.
I only eat twice a day (sometimes once) and the primary meal is a mushroom/spinach/egg omelet, usually with avocado or sardines, some tumeric/curcumin powder from Costco sprinkled on top, EVOO/Coconut oil, and usually some cheese.
Zero sugar, technically even zero carb.
Dinner varies a bit more, biased towards avoiding things that can be metabolized into blood glucose. It was my birthday recently, my wife got me an icecream cake. I protested a little as I tucked into it. :)
It's amazing the effect that avoiding processed sugar can have, and a little intermittent fasting baked in.
When my wife and I host family, I always am struck by how much work breakfast is. Extra eating, extra dishes, etc. My wife doesn't do that eating schedule, but it works for me.
Re: Super Size Me and the sugar - that's a great point! The soda is a particularly odious offender, I'd love to see the effect of eating just the burger every day.
Remember that couple in there two who went BLIND when they stopped drinking soda. Crazy.
I had the exact same experience with doctors just saying there was nothing a man can do to improve fertility. “It’s just genetic”.
I also second the case against sugar. I should have called out refined sugar specifically in my list. That was one thing I cut out 100% even in ingredients lists (this is tough. It’s in EVERYTHING. Even loads of savoury things that have zero business having sugar in).
Side pondering - I’ve often wondered if McDonalds got a really raw deal from Super Size Me (great documentary) and that it was just the super size soft drinks that were the cause of problems - remember the guy in there who has eaten thousands of Big Macs? But he never had the drink. And he was thin as a rake (dunno how many kids he had though!)