I don't mean to sound like a jerk, but it's sort of hard to determine if people are being cruel or not over the internet so I'll just throw that out there. I think this should be the easiest question to answer. There's a reason, and it's different for everyone, as to why you've applied and taken all the initiative to take prereqs, etc. If you can't imagine yourself doing PT, you may have to rethink your decision. For me personally, I want to do PT because it perfectly combines everything I'm really interested in: anatomy, education, physiology, etc. Again, that's just my opinion and sorry if you feel that I'm being a jerk but intentions are not to be! lol