Not necessarily, but there are certain topics I have zero tolerance for, and guns are a great example of that. If you own guns, support the gun industry and lobbying, then I flat out do not want to be intimate with you. As a person in front of me I have very little interest in you (see: judgmental comment in reply to bb). Granted, I have a family member who was killed due to gun violence, so that's an extreme example.
Oh I don't live in America and we don't really support how you guys do things. To be blunt thought you will likely have to work on the quick to judge thing you've seemingly got going on. You'll never like everything about a person and if you did you would probably get bored of them. A partner should be somebody who you can grow with and that's not really gonna happen when someone is exactly like you. Also if you are with them for being like you you won't like when they inevitably grow to be a different at different times from you.