I said "I don't want to work" to my partner and they were upset.

Yesterday my partner (21) and I (21) were talking and somehow it got to the point where I mentioned how I couldn't believe anyone would want to work and how I didn't want to work. I had no idea it would upset them so much. First they clarified that some people don't have a choice whether to work or not. Which I said I understood, and that was not my point. My point was that I think most people do not want to work (or at least not the job they are "given"). After an awkward silence, they said: "Please don't say that again. That you don't want to work. It does not belong in my household." which left me a bit stunned. I did not understand how my statement could be so offensive. I felt bad because I did not think before I spoke. For context, I have never had a job and have been applying for jobs since we started dating 9 months ago. It's important to them that I get a job in our relationship, which I don't mind and actually look forward to. They have been very supportive and understanding of my situation so far. I guess it was a little insensitive, I didn't want to make it seem like I couldn't get a job or wouldn't work. I just thought he would feel the same way for some stupid reason. As if what I said was common sense, but I realized that my statement was coming from a place of privilege and naivety, even though I still genuinely feel that way. It left me feeling weird not sure why. Way more was said but I don't wanna make this post longer than it needs to be. Any thoughts?