The beauty of the desktop is that you can buy a display that fits your budget and needs. A desktop monitor that's equal to a typical 1080 laptop display can be had for $150. If you need something better, you can spend more but very few people will need to spend more than $500.

If it breaks, you plug in a new one at 1/3 to 1/2 the cost of the laptop repair with the only downtime being how long it takes to drive to the store.

This is like saying that you don’t think formalwear is a good deal because your Costco jeans are more durable. Desktops are great, I heartily recommend using them instead of laptops for most people, but it’s not especially revelatory to point out that laptops make design trade offs to hit their size & battery trade offs.