No there is no way to delete content once it was published.* Even revisions are there forever. We need this to be transparent. Nothing is hidden, all is open to the public.
By joining our community you agreed to this and that all content will be published under a creative commons license. You also agreed that people will be able to edit any of your content.
Mass-deleting your own content is considered as vandalism as it directly affects other people's interest and this will never be tolerated.
If you feel unhappy having your name attached to a post you can ask to have it disassociated. After you had decided to leave us (which I hope will never happen) your name will be replaced by a
user#### default from all your posts (you can see that sometimes on posts from deleted user accounts)
Still, think about it. You contributed a lot. People loved you posts and they led to fruitful discussions.
We are quite a mixed community of all kinds of people from a 13 years old learner to retired people who spend their free time with the German language. We also have a wide range from of professional to laymen. All and everybody is welcome here, but then it is not to be expected that we all have the same goals, the same views, and the same love for our beautiful language.
But we try to work together to get solutions on language problems, to help people on issues while learning, an of course to learn about the history and the peculiarities of German. To make the world better.
We need you there!
Sadly we do need some rules but I hope we do not have too many of them. All our rules were created and are maintained and discussed by you, by the community. Everybody is invited to contribute on these discussions here on meta. Only rarely when it comes to basic principles of how the Stack Exchange Network works we will have to follow those rules set by the system.
I do hope you understand that nobody wants to force you into anything other than maybe a bit to stay, really.
*in rare cases (e.g. accidentally posted private information or other highly problematic content) we can request a complete removal but only of this part of a post. To do so flag a post for moderator attention and explain.