Apologize for your frustration. I understand that the transition to another software will not be without challenges. Having said that, Adobe Muse will continue to be around and supported for another year. You can continue using Adobe Muse beyond that as long as its code is supported by web standards and browsers, and for as long as your OS supports it. If you have hosted your site on BC, you have a year to migrate it to a third-party hosting provider.
Assets such as text and images can be exported for use after migration.
I have started a discussion on discussing alternative solutions and migration paths Adobe Muse EOL announcement - Alternatives to Adobe Muse? and will be inviting our experts here to participate. Please bookmark this forum post for reference.