Disassociating is not an automatic shunning by close family members. At least it doesn't have to be. The Society has waffled on their stance on this. As an example, my Uncle who is an elder and a "pillar" in the Detroit area as well as his wife, my Aunt, at first maintained normal, cordial familial contact with me. They eventually did cut off contact. However, that was more due to my moving in with someone of the same sex. That was a bit too much for them to handle.
But, it sounds as if your parents are of the more rigid viewpoint. [Funny, my Uncle is an extremely staunch JW, it really did surprise me that he at first maintained contact.] If they truly do "stick to their guns" and would cut off contact, then it's up to you to weigh the benefits of having their contact vs the benefits of disassociating. Also, friends tend to cut you off "without a plug nickel" if you DA.
If you do decide to DA, you can reassure them that nothing has changed in your love for them and that you'll always be there for them. That in itself would show that you have unconditional love. Then, the real burden is on their shoulders. Perhaps they'll eventually "wise up" and accept you, assuming that you choose to DA.
As for me, yes, I lost all contact with my friends at the Congregations that I've attended. And, as I mentioned, my Uncle and Aunt. [My Uncle was more a father to me than my actual father, so that was a loss not unlike you potentially losing your parents' contact.] And, yes, in "the World" there are those who you do have to guard yourself against. But, then, the same applies to the Congregation. I've known several active JWs while I was still part of the Organization that I'd rather never have had to have contact with.
Yet, there are "gems" outside of the JW World as well. My closest friends have been those that I've found after leaving the JWs. That consists of both other ex-JWs as well as people who've never had anything to do with the JWs.
So, the choice is yours. Just weight the pros and cons of both staying in and leaving. As for me, after leaving the JWs I literally felt as if the "weight of the World was taken off of my shoulders". It's a great feeling/experience to be able to actually reason out your own decisions and not have to make sure that they match the Organizations straight-jacketed rules.
Wishing you the best,
