Erasing your account wouldn't change the fact that anyone who is interested enough in someone else on the internet CAN find out details about them if they're determined enough.
Besides, don't go erasing your account on my behalf, I'm in Huddersfield, West Yorkshire, England (might as well say it, I post it publicly on another forum I use regularly, because I meet up with other reptile keepers regularly - yes, there are people on the internet who know where I live, my real first name, what I do for a living - even where I work) so I'm absolutely no threat to someone who lives in Texas, even if I wanted to be (which I don't.) Just because I personally cannot and will not see eye to eye with you based on your statements about animals doesn't mean I hate you. It just means I disagree with you.
People you see in your everyday life are a lot more likely to be a "problem" for someone than faceless and largely uninterested strangers on the interwebz. I wouldn't trust my across-the-street neighbour if I left my door unlocked, for example.