Thank you to all of you, I really mean it. Your insights have been very helpful to me.
I agree that I have to pick what I enjoy the most but knowing myself, in the future, I really would like to have the time to spend with my family/children so life style is as important (if not more) as how much I enjoy my work when it comes to picking between the different specialties.
I do not want to be doing something I would hate just to have a good life style (otherwise, I absolutely wouldn't be in medicine now) but sometimes between 2 specialties, there isn't a huge difference in terms of likability. For example, I really didn't like dermatology (based on my exposure) - which is why it is not on my list, although they are known to have a good life-style. I cannot see myself doing major/open surgeries (like ortho, plastics, etc.) either but I think I can do minimally invasive surgeries (like microsurgeries in ophtho or in IR) and I did enjoy when I shadowed a few radiology residents in Toronto. IM (cardiology, endocrine, gastro) are all something I would consider. So it might be the difference between a 7/10 or an 8/10 when it comes to how much I enjoy each.
However, if the life style (#hours on call, etc.) or job outlook (radiology being at risk in 10 years or so) of one is significantly worst than the other - this would totally change my decision. I would pick a specialty I enjoy 7/10 with a 8/10 lifestyle, then one I like 8/10 with a 2/10 lifestyle.
When it comes to ophthalmology: I am concerned about the ridiculously low income of new graduates (150-200k for the first few years AFTER residency is brutal) as well as job market and lack of OR time. However, I love the fact that I can become a "business owner" and run a private clinic - not just because of the flexibility but also because I don't want to be practicing 24/7/365, I like a little bit of non-medicine stuff mixed in there too (this, and teaching, research, etc.) I do enjoy having "some" patient interaction and building rapport and long-term relationships with them.
When it comes to radiology: I am concerned about the off-shore radiologists, role of machine learning and AI, and how radiologists are now forced to read so many studies, in so little time, and which is only getting worst. However, I like that I will be sitting at my desk and challenging myself mentally as opposed to hands on and physically taxing and "too-much" patient contact.
You guys are the experts which is why I am reaching out to you to ask you about your thoughts when it comes to life style and employment opportunities for both ophtho and rad. Which residency is harder (when it comes to hours, # on call, etc.), which one has better salary and employment opportunities, which one will less likely to "die" in 15-20 years, etc.
Thank you guys so much for your time, you guys are amazing.