Many years ago I taught at a university that (in addition to lots of traditional 18 year olds) specifically catered to older, non-traditional students (i.e. had staff decicated to their advising et al). I remember fondly one woman who was well over sixty. She felt frustrated that she dropped out of university when she got married, so she went back to school and got her bachelors degree.
So, if you just want a college degree because you don't have one, and can afford to spend the time and the money - sure, go for it. You'll probably feel very good when you graduate. (I suggest that you look for schools that state specificlly that they welcome non-traditional / returning students, and research what resources they offer.)
If you want to expand your knowledge, then you're probably better off taking specific courses that you're interested in through a non-degree continuing education program. (You can find pretty much anything you like, especially if you're open to distance learning and are willing to pay the tuition. Given your experiences that you list, you may, for example, like some graduate-level course in category theory and functional programming that would not be a part of any undergraduate degree program.) To get a bachelors degree in any major in the U.S., you'd be required to take lots of "fluff" courses (usually called "core curriculum" or something similar) that might not be hard, but would not be useful or interesting either.
If you think that getting a college degree will improve your chances of employment, or that you'd have a good time socializing on campus as portrayed in Hollywood movies like The Animal House - sorry, I doubt that very much.