Even molecular biologists use animals in their research!
For instance, the lab that I work in focuses on NK cells. There is a large population of NK cells in the liver( they are lymphocytes) so the researchers have to sacrifice mice in order to obtain the liver and isolate the NK cells. We also use mice to inject MCMV in them to study the effects of the virus in certain strains of mice, particularly those that lack a gene complex encoded for the NK receptors required for resistance.
Hope that made sense heh, sorry I just woke up from a nap.
But the point is, maybe you should look for another career path if you don't think animals shouldn't be part of the equation.
I also had a classmate who couldn't even observe with the rest of the class the dissecting procedure of a rat in preparation for histogical and histochemical studies, as well as preparation for the transmission electron microscopy. She had to leave the room! I just don't understand. Maybe it is just me.
I'm forgetting another story, gah! It's been a long week. More to come...