I used to be a Google Chrome user, but since chrome changed their browser to prevent the backspace button from being used to navigate back to the previous page
I hated this change and used an extension that fixes it. However, while editing a pdf form with the built-in pdf viewer and using backspace, it did a history back and I lost everything I entered. It was the first time I had an issue with using backspace. I then quit using the extension and started using the key on my laptop that is for back. It's right next to the up arrow key on my thinkpad. I actually like this better than the backspace and it wasn't hard at all to get used to.