Scared to live alone w/ Asthma. Breaking up with my boyfriend of 5 years. Need advice Please

Hi.  This is a serious question.  I have had asthma since the age of 10.  My asthma is directly related to allergies of all kinds.  For the last 5 years I've lived with my boyfriend, and before that I lived with my parents.  We are breaking up and this will be the first time that I am actually living alone, and it scares me because I've heard that you should always have someone around if you are living with asthma.  Am I just being paranoid?  Surely everyone living with asthma doesn't have a roommate, and really, I don't want a roommate, or a boyfriend, but I'm still scared to live alone.   

I live in Florida now, but I'm originally from Philadelphia.  Let me say this, living in Philadelphia was a living hell as far as my allergies and breathing were concerned. Down here in Florida I have about 80% less symptoms.  This allows for a social life, a job, the ability to open my windows!  I was a prisoner for so many years.  I'm not sure if the lack of asthma is just temporary while I adjust to the area, but whatever it is, I feel like a new person.  

Now here is my dilemma.  I moved down here with my boyfriend, I have zero family and very few friends around, yet I want to get my own place here since I have so few symptoms.  Would it be better for me to go back to PA, near my family, and be sick, or should I stick it out down here in FL, completely alone, yet healthier?  I would love any opinions on this.  This is a scenario you can't really understand unless you have asthma yourself, so I really need the help.  Thanks for reading this post everyone.