I can understand why it is offensive when other people seem to imply that the path to pharmacy school and beyond is somehow "easier" than medical or dental school. I don't really mind it because a lot of new college students are just that way, they're not really experienced, and they haven't figured out what they want to do yet. I hate using the word "immature" but I will say that I believe most students gain A LOT of maturity during their 4 years of undergrad. Not that I disagree with going to pharmacy school after 2 years of college, but I think we have a lot to gain and learn by each year we are out of the high school world.
As far as deciding what you want to do... you just need to research and get involved. Shadow a dentist, volunteer in a pharmacy, join a pre-dental or pre-pharmacy club, research schools, and talk to people in both professions. The more you know the better decision you can make. I thought I wanted to go to dental school at one point too, but once I learned more and more about pharmacy I knew it was what I wanted to do and I was much, much happier. You will know once you find the right thing for you. If you are unsure, or skeptical, or anxious, then maybe you should consider learning about another career. Once I figured out that I wanted to go to pharmacy school I became so much more excited about my classes, studying for the PCAT, volunteering, everything. Just remember that it shouldn't be about what's easier or what pays more. I know that sounds obvious and cliche, but it's true. If you're not doing something you enjoy it will be torture and never worth it.