So my SO and I are getting married within the next year or so and his mother has always had a lot of health issues, Chronic pain issues, and a bleeding disorder. His dad isn't aging well either and has started suffering from various ailments as well. My SO has said various times that he would never put them in assisted living or a nursing home once they needed help with things, they would move in with him and he would take care of them.

Looking into the future, I don't like that. His parents are going to need a lot of care that we aren't going to be able to provide and I don't like the idea of being responsible indefinitely for his parents and also trying to start a career and a family. I adore his parents and I love them so much and I want them to be a part of our lives and I want to help them, but I don't want that burden on us of their health and well being when we aren't equipped to handle that. Of course I don't want to dump them in some random facility, I want to ensure that they will be as comfortable as possible and taken care of by people who know what they're doing and I am okay with being financially responsible for those things. Am I selfish for thinking this way?