Is saying “I like old people” in the same light as saying “I like black people” or “I like chinamen”. “Old” is kind of putting them in their obvious box, right? And some people who are of the older set, might get offended by that.
Maybe you should say “I like people that have 50 years more living experience” or “I like wise people”.
My papa is in a nursing home. This is NOT him pictured. We went for a visit, and my gosh if this is not a den of great pictures of life, love and spilled milk.