Hi Samantha. You answer one side, but I am curious what you are really looking at. The way people seem or their work under duress. In undergrad do you think classmates might have created data especially when their experimental data did not look so good and they wanted a good grade? Did you possibly see activity like that in graduate work? If so does it make you wonder if that type of thing will continue? Work that looked pretty but did not make sense? Would your current position allow you to raise a family on its paycheck alone? If yes at what age could your compensation do that?
My major was microbiology and I do systems administration now. I make enough to support my wife who has medical issues. Kids might have happened if I did not lose a decade of income generation to science. End of of undergrad saw incredible cut throat competition for grades and an increase in rote study. In some graduate work I redid a study that went into a paper. The first study by a student was pretty by inconclusive. It was pretty because the time intervals where always the same in a procedure where that was quite frankly impossible.
As for the original poster it did seem to me that physics and math tend to have less of that than chem and biology. Biology was to crammed with people who thought they where going to be doctors and a over-crowed phd and masters market. If your a bachelors your real screwed as there are also allot of lab tech degrees. Essentially places can get phd's to do masters jobs and masters to do bachelors level. Anything left is cheapest to do with the lab techs. Also its hard to have to much rote study in math. My guess is physics and math might be alright. If you can pick up a CS minor or Secondary ed (not that this one would pay allot but there would be food on the table) onto your major, it would make a nice fallback position. Everyone who goes into science should have a fallback position.