I've been an OT for nearly 6 years and I was turned off by PT because it focused more on the physical rehabilitation piece. When you work with people, it is NEVER just a physical problem. There's always more pieces to the puzzle like a person's psychological feelings about the illness/disability, his/her support group, economic circumstances etc. OT allows you to take a "big picture" look at your patient and see how all of those pieces fit together when you are trying to rehabilitate them. As an OT, you are often trying to fit the person with his/her occupation and/or environment. What I mean is that if someone is having trouble with eating, you have to determine if it's a strength, dexterity, coordination etc problem or if the patient needs adapted equipment like a curved spoon to make it easier. Or perhaps, the person is perfectly able to feed himself/herself but the surrounding environment is distracting or puts obstacles in the way of the person being able to do it independently. That is the kind of problem solving that you do as an OT. If you're a compassionate person who likes to be creative and try different things, you will do well in OT. That fits me--I didn't want to do just have a set of exercises as a go-to for solving problems. In OT, you can do exercise especially if that is what the person really respond to for treatment but you have the option of doing actual, functional tasks. The fit depends on each person.
I've met a lot of PTs, OTs and SLPs and I didn't have a problem with anyone as long as they were professional and not immature, lol. Here are my generalizations that I've observed (and had a manager also state to me!). It is based upon appearance. PTs tend to be more of the athletic sort and into sports. OTs are more practical in dress. We are more about comfortable shoes, pockets for different treatment ideas and many of us like scrubs because we do deal with bathroom trips and eating. Speech tends to dress up a lot and even use makeup although that surprises me since they do deal with coughing and phlegm, lol. Just my observations from the jobs that I've had, lol. But most of us rehab professional are friendly and willing to work together. I would go into a field that fits you in terms of personality so know what kind of a person you are. If you like structure and routine, PT may be a better fit. OT is a better fit for people who like spontaneity, flexibility and seeing the big picture, in my humble opinion. Hope that helps.