[PLUG] question on impending upgrade in OS

[American Citizen]

Hello:

I am nervous about upgrading from OpenSuse Leap 15.5 (which is no longer 
supported) to Leap 16.0 (current version)

Should I simply do an upgrade?

Or should I wipe all the folders clean except the /home folder ?? and 
let openSuse Leap 16.0 create brand new information upon doing the upgrade?

My concern is that all the old stuff will be dragged into this upgrade 
and even more disk space be lost.

Any advice?

Randall