I need to give a reason why I am choosing a vignette research method...?

I am choosing a vignette research method. Can anyone give me the best reason for deciding that.Thx

I need to give a reason why I am choosing a vignette research method...?
Vignette is suitable in qualitative vs. quantitative research. Here is a brief description of the use of vignettes in qualitative research:





http://sru.soc.surrey.ac.uk/SRU25.html