So how do you deal with the witness stuff always being presented in conversations?
In my experience the only way to deal with it is to walk away. The Watchtower draws a hard line on issues that most mainstream religions do not even bother with, which makes it impossible to have a conversation with a witness that doesn't, in some way, touch on their religious beliefs.
Try to talk about politics with a witness and inevitably it will come down to "It's all futile, only Jehovah's government can fix things". Try to have a conversation about science or nature and unless you tread very carefully - avoiding any reference to evolution, geology, cosmology or anything else that suggests that the universe is more than a few thousand years old - you are certain to come into conflict. Ethical debate is also useless, since JWs only recognize the authority of the Watchtower and know nothing of ethics as it relates to philosophy. Social justice issues will just get you the tired line that "Why bother trying to change anything, Jehovah will soon set everything right".
In short, there is literally nothing these people can say that you couldn't read in a Watchtower. They have no thoughts of their own. They live in a fantasy world of God, angels and demons. There is simply no common ground on which to build a rapport, let alone a relationship.