typical scenarios:

junior executive/engineer in industry targeting a career in consulting or banking
junior consultant/banker targeting a career in funds/pe/vc
mid-level executive/manager facing 'bottleneck' in their career, targeting at a higher rank in the same industry

while mba students come from all sorts of backgrounds, they are typically looking for some changes or opportunities which would be hard to reach without the help of a mba degree.

since you are pretty happy with your current pay and more importantly, the job prospect, mba seems a less appealing option for you.