THANK YOU ALL for your replies. I'll do a clean install and made a backup of my files (was not difficult bc most stuff I have in the cloud). I'm moving indeed from Mint to OpenSuse Tumbleweed. I don't know exactely why, but it seems to me an interesting thing to do. Still figuring out what distro fits me best.
If we want to achieve adoption by the "main stream" consumer market we have to make sure that the Linux distro is absolutely idiot-proof. In the mind of many people, Linux is for IT-nerds and it's difficult to change a way of thinking. You'll have to prove it with: 1. Reliability (f.e. support of the EU); 2. Influencers who say that Linux is OK; 3. A Linux distro that is effectively proving that it can work idiot proof. Otherwise Linux is dead on arrival to become mainstream.
That's what big tech companies do, they buy small and promissing companies they think that once can become a competitor and then.... destroy it. The young startups just take the money and can retire early.
I'm still in the fase of exploration. When using Windows, you just have 1 choice. I just want to discover what suits me best. So nothing against Linux Mint. It's great, but maybe OpenSuse is better for me? I don't know.