I have been a physio for 29 years and it is a great profession! I never wanted to be a Dr so no inferiority complex there. It depends what you want to achieve - if you are comfortable dealing with serious disease and can cope with the responsibility of putting your patients at serious risk from time to time, can cope with patients dying while on your call, find drug prescription and possibly conducting surgery then medicine may be for you. But dishing out drugs and cutting people up never interested to me - don't get me wrong I am not anti medicine. quite the opposite. I have worked alongside Drs for all my career and have huge respect for what they do. Just a case of not my thing.
In contrast physiotherapy is a healthy profession and precise physical assessment, hands on contact, exercise and education are what it is about. Some physios are drawn to the sports world where physio offers invaluable support. Others are interested in doing what we can to limit disability and rehabilitation is very rewarding. some areas of practice are:
sports physiotherapy
Musculoskeletal physiotherapy
cardiopulmonary physiotherapy
neurological physiotherapy
physiotherapy for the older adult
paediatric physio
occupational health and ergonomics
research
teaching physiotherapy
...and there are many other options. so no shortage of opportunities
The biggest downside I see with being a physio is the money - or lack of it. Compared to taking on a commercial career for instance, the money is not great. That doesn't mean you can't make money but this is not easy these days. So one does it because it is a real vocation. However that applies to most health practice careers.
One other thing worth mentioning is the importance of being a good communicator and enjoying dealing with a large variety of people. Again this is essential for all health practitioners - may be not pathologists - but everyone else yes. You generally are working in a team environment.
Physios enjoy a high level of autonomy these days - some places more than others but gone are the days where we were servants to Drs. A lot of counties in the world you don't need referrals from drs and that has been a good thing although greatly has increased our responsibility