Reasons NOT to upgrade ASP.NET to ASP.NET Core (but you will have to anyway)
I know, I know, .NET Core is the future of .NET, and "cross-platform blah-blah", and "high-performance and scalable blah-blah", and also "microservices!!! containers!!!" etc. Even more - I understand that's it's inevitable. But still. Consider this an angry post on what's wrong with upgrading from ASP.NET Framework to ASP.NET Core:
Facebook Banned our SaaS Website
As if 2020 had not been exciting enough, Facebook decided to ban our website 8 months ago. No links to it could be shared anymore, the old posts and comments linking to our domain were nowhere to be found. Triggered by some kind of machine learning moderation algorithm, our harmless little SaaS, which spits out one boring article a month (and gets three "likes"), was suddenly labeled as "violating community standards"