> a lot of the optimism I had from tech improving our lives has largely been erased
It can do both, and we should strive to both prevent it from degrading our lives, and make it improve them. That's the original purpose of our computers. This should drive us. It drives me. I'd say this is critically important.
Please try to do the right things, whoever reads this. Computer scientists are powerful and impactful. Please reflect on how and what you (and whoever pays you) spend your time on, how it impacts society and human beings (and beyond) and make sure your are at ease with what you come up with, whatever the scale of the impact is. Don't lie to yourself. This paragraph should not be painful to read.