Anyone have input on infectious diseases?
While definitely there's a difference in the crowd "politeness" between specialties I think you have to ask yourself the following questions.
- what types of medicine do you like to practice (eg procedures, no procedure, operation, how much patient contact, whether verbal or hands on etc)
- what age population do you want to work with
- healthy or sick people and are you okay with the areas that have a higher mortality rate because of the condition or age of the group
- interaction with colleagues, what is the mentality
- work place environment do you like the hospital, or prefer your own practice, do you prefer high pressure like er or something much more even pace and a little more predictable
- salary (does it matter to you within the field of being an MD what your salary is)
- time in school
- do you prefer your patience to be unconscious or conscious most of the time lol
I think between the above and what you feel yourself drawn to will answer what you might be interested in specializing in. You probably won't feel drawn to a specialty where the patient population is not considered to be pleasant as is seems that is something important to you.
Also I'll add that you can probably manipulate to a certain degree the pleasantness of your patients based on the setting, if you specialize in your specialty, location, population you try to attract and so on because disease doesn't discriminate based on how nice a person is or isn't

Although I will say as a caveat that some specialties are more akin to more cranky, rude, appreciative patients by nature.
Hope this was helpful and good luck!