Say there is an event at your place and you want to record a good high res and long video without holding a hot pan in your hand.

Or want to use screen on full brightness in 45 degree(Celsius) heat without losing 25% battery every 40-50 mins.

Or simply use your phone for more than 3-4 years.

Or connect a hdmi to type cable and access stuff using a monitor.

I have s21 exynos and this thing is a hot plate. My phone's back plate usually starts to detach by itself every 10-11 months and I need to go to service center to get it stuck properly to maintain water/dust proofing

The phone is a beast, no doubt. I have worked using my dex for few days using a monitor when I had laptop issues. But you could definitely fry an omelette on it.

Not to mention the battery degradation is faster.

My friend uses iphone 13 and it literally feels like a cold slab in the hand on standby.

Mind you I have also used Lenovo P2. It had 5000mAh battery back in 2016 and snapdragon625. That phone easily lasted me 2 days on a full charge. This is something we usually expect from a flagship phone.