You are getting these downvotes because the uyghurs are not topic. Do you call for slavery everytime someone talks about western economy? No? So its bad if the chinese do this but ok when the west does this?

You use the same linux install (cloned) for a decade? Thats wild. I just install and document my changes so its not much to do for a reinstall. So for some it works, for some not. OP might be like me, thus my answer has a right to exist! Maybe you could stop correcting others for being different.

Linux is not a car. If i could reinstall a broken car i would do it instead burying money and time in it.

If you have separate partitions for root/home, just reinstall kubuntu.

What a strong, selfless person. We need more of this kind.