Either you weren't contributing for decades, or you literally only contributed $10-$20/mo for ~30 years. If your job provides a 401k option, with tax write-offs and everything else you should have been contributing a lot more to maximize its future utility. This is assuming your employer wasn't even matching.
Either you aren't telling us the full details, or you haven't fully been contributing for decades.
I distinctly remember the same sentiment in 2015 and 2016. Don't listen to what anything or anyone says. Just vote, and get people you know to vote, because Trump's supporters certainly will.