IHMO, YMMV, I'm not a medical doctor, etc etc. But the below is what I experienced.

Reason 1: LCHF/Keto Actually Works

It actually burns excess fat. Try for yourself rather than taking my (or anybody's) word for it. I tried many other methods that didn't work, and I'm sure you did too. This one does, and that's more than can be said for most others.

Reason 2: With LCHF/Keto, I Won't Go Hungry

I may eat to satiety at every meal. That's the main reason why I found other diets unsustainable, whereas I've been able to keep up LCHF/Keto for several years.

Reason 3: LCHF/Keto Boosts My Energy Levels

LCHF/keto increased my energy levels, enhancing my overall physical and mental performance. I no longer feel as tired, wake up earlier and am alert for much longer.

Reason 4: LCHF/Keto Does Not Require Me To Count Anything

It's very simple to implement. Contrary to most other diets, I don't have to keep track of the amount of calories or macronutrients I eat. I basically just exclude one food group. Easy peasy. This frees up a lot of mental space.

Reason 5: LCHF/Keto Is Beneficial For Blood Glucose Control

LCHF/Keto makes me lose fat by lowering the hormone that makes me store fat. It breaks the vicious circle that keeps my blood glucose elevated.

To ward off diabetes, this side effect is more valuable than the fat loss itself.