I dropped out of tech after a couple years to go study neuroscience. Even though I returned to software, I do not regret for a second that I went to study something so broad and deep and mysterious. I know that huge areas of neuroscience will remain opaque to science for decades to come. I am blessed to have had a few years contact with that complexity and mystery. If anyone reading this, at any age, wants to take biology for a spin, by all means do so. You only live once.