If writing and film are your true interests, you probably need to find something that gets you from A (where you are now) to B (writing and film) and positions you for that transition down the road. If the programming is rusty, that limits your options there (at least in the short term). I certainly wouldn't start sweating about cognitive decline in your 40s and 50s - it's several years away, and I don't think it's as common as you're likely reading about recently.