If you are good at what you do, then there is no one who could take away your job..but then again,, it depends on your level of interest.
I would agree with you in regard that the value of simple bachelor's degree is somewhat limited nowadays.. But considering you like to do your work,, i would advise you to continue studying in accordance to your field. As you mentioned, you can do MBA in MIS.
MBA from a good institution like IBA usually guarantee's a job. So, you really need to make up your mind and study hard once you get in.
I would agree with you in regard that the value of simple bachelor's degree is somewhat limited nowadays.. But considering you like to do your work,, i would advise you to continue studying in accordance to your field. As you mentioned, you can do MBA in MIS.
MBA from a good institution like IBA usually guarantee's a job. So, you really need to make up your mind and study hard once you get in.