Suki, I graduated from a 3 year diploma nursing school 33 years ago and have always wanted to go back to get my BSN; but LIFE has thrown some curve balls at me and I still don't have it yet. I'm working on it now, though, so hope that I have it within the next 2 years. Susy has given you some good advice: think about where you want to be in the future and what you'd like to be doing as an RN in the future. There is no difference on the floors between what an ADN and a BSN do as staff nurses; there IS a difference in how they process their thinking-- I believe that the BSN usually has more info on what and why is happening whereas the ADN has more info on what to do when things happen(this is immediately out of school, but depending on the different programs, the BSN usually has the ability to research things more thoroughly).
Not having a BSN hasn't hindered me in what I have done professionally up to this point of my life; but I worry that I won't physically be able to do what I'm doing (I work in CV-ICU, nights by choice due to family necessity) much longer. I have taught classes to my peers, am a CCRN, and have been active in my Nursing Association and am a member of AACN also; been on task forces for my state nursing association, been a member and chair of our state pratice commission, etc., etc., etc. I am currently in the process of writing an article for a professional journal. I know the my article would be better accepted with the initials "BSN" after my name, but my vitae (sp?) will help.
I know it isn't easy to go to school and work too, I did it back when I first went to school; but it is even harder to do with family responsibilities etc. Nobody promised that life would be easy, but it's up to you to decide if this is something that you really want. Good luck.