Going after an assistantship in housing if you have 0 interest would obviously not be a wise decision, and I doubt breaktheshell would do it because some random person on a forum suggested it. The reason I suggested it to breaktheshell, is because she expressed interest in counseling experience, and it seems like some days, that is all I do. Also, when I started thinking about SA as a career choice, I didn't even know what an assistantship was, let alone all of the areas you could get an assistantship in. If you weren't an RA in college, you might not know much about housing, so I was sharing my experience. I'm not going to sit here and talk up career advising if I know nothing about it. I didn't go to one interview weekend where I was only allowed to apply to one assistantship - go with what you feel passionate about, and if housing peeks your interest, maybe apply to it as a backup. If not, that is awesome too.
I disagree with ZeChocMoose about being pigeonholed when you work in housing. At the end of this past year, I had numerous colleagues who had been in live-in positions for anywhere from 2-6 years take positions in long distance education, academic advising, career advising and parent relations. Aside from my position as a resident director, I also work out of the office of judiciaries as a hearing officer, academically advise 10 students on academic probation, and serve on numerous divisional committees - I really enjoy all the inter-office work I get to participate in. Our VP, Dean of Students, Assistant Dean of Students, and two of my professors all stared out as hall directors, so it is a great springboard into other areas.
I'll shut-up about housing now, but I really don't think offering it as a opportunity to someone who may or may not know anything about it is skin off anyone's nose.