I got my B.A. in Psychology and now, barely a year later, I am finishing my pre-reqs to go to nursing school. Your circumstances are totally unique to you, but let me share what led me to my decision:
1) After spending two years studying psych, I didn't feel like I could actually do anything with the degree. I could fill in bubbles on a scantron and write a mean paper, but I hadn't learned anything that would help me help anyone else through a meaningful career.
2) For me to actually develop those helping skills, I would have needed to go to grad school, spending more money and time studying something that I had only somewhat enjoyed. For you, it may be totally worth it; for me, it was not.
3) In psych, I feel the risk of getting pigeonholed into a specialty or role, or becoming burnt out, is pretty great. These things can happen in nursing too, but the variety seems so great to me that I would feel comfortable transferring my skills from one environment to next, with the right support.
4) In nursing, you can see the results of what you're doing to help someone. It is a little more tangible than becoming a counselor or doing psychological research, which I would not have found as satisfying.
5) There is so much flexibility in nursing jobs with your role, your schedule, how much education you need, etc. It seems like it can be a job and/or a career, and will allow equal focus on professional development, a paycheck, your family, your hobbies, etc.
6) The money is quite a bit nicer than most jobs for psych graduates, even those with Masters or PhDs.
Like I said, you may find that you really love psych, and as long as you've got passion for it, any major or career path is worth it. But I wouldn't use psych as a back-up plan, unless you want to go to grad school as a part of it. Just my two pence.