The purpose of this study is to explore professionals’ view on why men purchase sexual services with a focus on heterosexual prostitution where the man is the buyer and the woman is the seller. To achieve the studys’ purposes and to be able to examine professionals’ views a qualitative approach is taken with semi-structured interviews. Six professionals who work or have been working in the organisation KAST (Buyers of sexual services, own translation), who are situated in Malmö, Gothenburg and Stockholm, have been interviewed. To get wider empirical data, a leading researcher within the subject of matter has also been interviewed. Furthermore, the study is based on current and historical research that shows that prostitution is a subject influenced by traditional views, countries regulations and globalisation with changing fields. Previous research has showed that a main focus has been on women who sell sexual services, the man who exploits prostitutes and his causes are less explored. The theoretical approach of this study is the theory of sexual scripts. The result has been analysed through three different levels that the theory gives, which are a structural perspective, an interpersonal level and an individual level. The aim is to get a holistic view on the subject and have a more social constructed approach. Several explanatory models are used in the study to make it possible to further understand men’s reasoning to buy sexual services. The findings of this study show that professionals’ views on why men purchase sexual services differ and there is not just one reason behind men’s causes. This demonstrates the complexity behind the field of prostitution and shows that one can’t categorise the type of man who purchases sexual services.