When it's reasonable to upgrade

For example, last time I was using Xiaomi Mi 5s Plus, waited until Pocophone F1 came out before I switch. Because my Mi 5s Plus has started to slow down and the battery can only last 1 day
Now waiting again for Xiaomi Mi 10 Pro before I upgrade again

And I'm upgrading to Mi 10 Pro because there is an actual need for me
Reasons for the upgrade:
1. 30W Wireless Charging - Yes, I need it, my job requires me to have lots of in-office meeting, I just want to put my phone on the wireless charger without worrying about where the fuck did I put the cable. My car also have built-in Qi wireless charger so it's definitely useful for me. This way the USB-C port can also stay tight longer
2. Bigger 4800mAH battery - Yes I need it too because 4000mAH in the Pocophone is no longer enough for my usage, I have lots of conference calls
3. AMOLED screen. IPS screen is good, but I want to go back to AMOLED, last AMOLED phone I had was Galaxy Note 3. AMOLED can also help make the battery last longer, although maybe in a very small percentage