Material Science & Engineering / Bioengineering / Chemical Engineering

Hello!
Can someone please answer any of these questions?

I originally thought I’d major in Bioengineering, but I hear that students in this field learn a little bit of everything and nothing about one specific area (which puts them at a disadvantage, since they have less expertise than ChemE’s and MechE’s).
--------Is this true for students who graduate with a bachelor’s degree in engineering?

If I majored in this field, I’d want to go into research - centered around fighting diseases, cancers, and such. I’m not as interested in the medical devices / artificial organs / tissue generation.
--------Are my interests well suited for this field?

Although the Bureau of Labor Stats says that the job oulook for bioengineers is great - faster growth than that of most other jobs’, are the job prospects really that great in the current market? I’ve heard of many who’ve graduated with a BS/BE in Bioeng who are struggling to find jobs and was wondering if generally, this is the case.
--------Is the outlook poor for those w/a bachelors? For those with grad school education who’re in research?
--------Can anyone who’s graduated with a bachelor’s in bioeng share their experiences about the job market?

I’m also extremely interested in Material Science and Engineering, but my parents are nervous about my choice, since they haven’t heard much about the field. I’m interested in nanotech, biomaterials, drug delivery, etc. The college offering me the best aid package (half tuition) don’t offer Material science as a major - only as a minor.
--------How are the job prospects for Materials Scientists?
--------If I’m going into research, should I seek graduate school education? Is it unwise to major in another related (bioeng or chemeng) field for my undergraduate studies, then specialize in materials for a masters or PhD, or is there no harm in not initially majoring in the field I’d like to pursue?

What do chemical engineers do? I may be pigeonholing their work, but when I think of ChemE’s I think pumps, manufacturing, modelling, and processing of goods, which doesn’t sound too interesting to me. Although I know of some Chemical Engineers who do pharmaceutical work, I’d like to know what jobs are most available for ChemE’s.