Family is what life gives you AND what you make yourself.
Very little of my family is blood, most are too distant both physically and mentally from me. I've had to take a "mental vacation" from most of my in-laws because of their beliefs. My own father has no idea about many things and I just leave it that way. My family now consists of husband, 2 grown sons, daughter, mother and sdad, my womens group, and an oddball variety of special friends both IRL and on the 'net.
My advice to you (non-binding, take it or leave it LOL) is to not cut the anchor that ties you to your family, but allow yourself to drift. They may catch up or they may not, but the ability to will still be there. Surround yourself with acceptance and love.