There are a number of reasons why deleting our own games is not a good idea.

Perhaps number one, is being hacked.

This has happened a few times here, going by regular reports.

Imagine that someone managed to login to your account, and then deleted your games.

It is one thing to prove your account has been hacked, another to prove games have been removed. And all that means extra work for GOG.

And as GOG know, sometimes folk do stupid things, which they are required to fix.

So a hide option, from their point of view, is less trouble for them.

And to be perfectly honest, I simply don't understand the need to delete a game from your library. If you truly need to do that, then you are doing something wrong, so any blame is completely yours, and expecting GOG to give you an option to deal with your error, is beyond silly. In the end it is a mental thing.

What truly matters with a store like GOG, is your downloaded backups, not what is sitting in your library on the cloud. If you have a problem with that, you are doing something wrong.

You're right. It's the customers fault for downloading a demo of a game, only to have some disgusting eyesore that lingers there in the background, forever. Even if you hide it, you know its there. Even if it's hidden, you know that GOG is using this information to recommend you future titles. Just let me remove the bloody demos! They're a blight on my neatly arranged items that I have permitted to remain in my account.

Why the sudden urgency to blame and shame customers for their own and GOG's mistakes? Allowing people to fix their own errors is okay. You make a typo in your post - you can edit it. You have a faulty transaction - you are allowed to make a refund. Sometimes GOG employees do mistakes too, like adding stuff to your library which you wouldn't order in the first place and simply cannot delete by yourself. Give customers an option to delete free-to-claim items like demos and prologues and there will be much less headache for GOG support - it's that simple. Don't blame people for asking lazy GOG to be better. People do shit too but they are allowed to learn and get better, while GOG remains with many limited features to this day.