But that's the same reason given for Farenheit!
I would also argue that Fahrenheit is better-suited for everyday life than Kelvin is. Both Celsius and Fahrenheit are objectively closer to temperatures we encounter. Fahrenheit being closer than Celsius is subjective. Do you understand?
It's not arbitrary in that it represents the fundamental limits of temperature in the universe.
There are still a bunch of arbitrary decisions:
- what is your minimum and maximum (e.g. why 0/100? Why not 0/1?)
- what does zero represent (e.g. why is 0 minimum? Why not center?)
- how do you scale (e.g. linear/logarithmic)
All of these are arbitrary decisions you've made when you suggested Planck temperature with a scale from 0 to 100. Do you understand?