Questions about switching distros

[Troll_the_Great]

Thank you all for your answers. I must go to sleep now, here is almost 1:00 AM, but I am still waiting for your opinions and comments and I will see them in the morning.
Good night all!

[Paqman]

Maybe I didn't make myself understood. I don't want to keep 2 distros, only one. I will format the boot partition and install the other OS and keep only /home.

I still wouldn't attempt to recycle settings. Keep the data for sure, but create a fresh account in the new system.

[HermanAB]

Just make a new user account.