Add me into the column of folks saying "Go for it!" I have a couple of additional things to suggest to you to think about:

I'm told that continuing learning is one of the best ways to stave off Alzheimer's disease. I have no idea how old you are, but I remember that everytime I have a school assignment that I'd rather avoid. Keep learning as Alzheimer's prevention!

If the learning is the most important thing, you might look into IT programs at your local community college. At the community college I work for (and am a student at) we have programs in computer support, web design, networking (including certification). They probably have evening courses, possibly online courses and Saturday courses. And, I would bet that your local community college does not charge $395/credit hour either!