Do you know what is verison up?
Do you know why they version up?
Windows,Android and Mac OS or IOS every operating system.
Improve and fix bug that's why....^^
Every Version Galaxy S7 user use Android 7.0 but last build number of Nougat is 7.1.2.
Google fix bug and implove system so change 7.0 7.1 7.1.1 7.1.2 8.0 8.1
But, we can get only 7.0 and 8.0(not now)
And now P.(Samsung said 8.0 is last for Galaxy S7)
So what is better? 7.0 or 8.0
Maybe some bug in their system(8.0).
They(Google,Samsung,Verison) can fix and provide us.
Some user say Android Oreo has batter drain, bootloop ,,,,,,problems.
You can find the way fix this or Samsung,Verizon fix for you or us.
If you like 7.0 you can stay there.
Everybody want to step up, You can stay there....... IF YOU WANT.