I never use the Dock and all it does for me is come in the way when I'm resizing windows or clicking on stuff I can't access using just my keyboard.
Here's a way to hide the Dock so it doesn't get in the way anymore.
Run the following commands in the terminal.
# Hide Dock
defaults write com.apple.dock autohide -bool true && killall Dock
defaults write com.apple.dock autohide-delay -float 1000 && killall Dock