Rapid advances in the development of artificial intelligence (AI) allow their applications in many areas of personal and professional everyday life. AI can make decisions or support decision-making, e.g. by offering a suggestion a user can use as an initial orientation when making a decision. When considering the actual use of AI-based tools, it is noticeable that there are domains, in which use of AI has already become commonplace (route planners, online sales), while other areas remain largely unaffected (justice). This differentiation also applies to the associated occupational fields. It is unclear whether this variation is due to the technical possibilities or limitations of the applicability of AI in these areas or arises at the level of typical users and their needs. Exploratory interviews with practitioners from various fields - lawyers, pilots, auditors and medical professionals – revealed that the understanding of AI, the role that AI can and should play, but also the requirements that these professional groups place on an acceptable AI-based decision differentiate substantially. The key here is the different balancing of performance and the ability to explain decisions and decision-making processes. With samples of professional practitioners from various fields, the project examines the willingness to use an AI-based forecast, but also the factors - such as forecast quality and explainability - that influence this willingness.