Well, to answer your first question.....pharmacy school is generally seen as easier to get into. For example, in 2007 47% of pharmacy school applicants came in with a BS or above, compared to optometry school at 96%. The GPA requirements about the same (3.47 for pharm vs 3.55 for op school), but the list of pre-reqs for pharmacy and the number of different majors generally accepted is more broad. Also, there are many more pharmacy schools than op schools, with obviously a larger demand for a very different service.
As someone that is in op school now, I would say that there seemed to be absolutely no challenge to being a pharmacist. I would never save a life, save someone's vision, make someone's days markedly better from the knowledge and compassion I gave them. I was simply a conduit between someone who makes the actual decisions and the patients that went to these people for help....and sorry, but I did not go to school for 7-8 years to be a very well-trained and respectable middleman. I worked in the office of an OD that had been in the local paper 3 times since he started in the area 7 years previous. In the last article he and another doctor were credited with possibly saving a man's life, after he came to my boss's office with visual problems, only for the doctor to discover a brain tumor. No pharmacists are in papers, ever. No one knows can tell you who their pharmacist is, as they can their dentist, family doc, vet, and eye doctor. So yes, I am a tad passionate about what this profession does.
With all of that said, in a pure business mind, pharmacy has what is almost guaranteed 6-figures or something very close....but here is the problem: there is almost no chance of being wealthy in pharmacy. Family pharmacies have disappeared, and the entire business is run by companies for which a starting pharmacist has no chance of out-competing. In optometry, we suffer from in some cases very harsh oversupply, mainly in large urban areas, but there are extremely wealthy OD's out there. They are of course a minority, and there are too many OD's slaving away at Pearle vision for 85k a year, but the potential does exist. I think that these are the draws to our profession, and many of them have no equal in pharmacy.
So....guess next I will tell you what I REALLY think!
Good luck w everything you do. Very good question.