After the job search, interviews and multiple job offers, there are many decisions to be made. Most people first of all are interested in salary and make a decision based only on this. But there are a lot of other factors to think about. Workplaces are very different. The noise levels of the office, the mood of the employees you meet are also important. You do not want to work in an environment where you feel bad.
Nowadays a lot of people choose job at first considering salarys, and only then think about work environment. From one hand it is clearly, why they do that, but from other hand it is so wrong.