It would be nice if your mate shared your tastes.  And to an extent, that is important.  But, if your tastes are on the extreme, that might not be possible.

For example, you both might like listening to rock music.  But, your mate may not share your enthusiasm for “The Mud Puppies”.  So, it is not that your mate doesn’t like rock music.  Rather, it is that your rock music taste is extreme.

So, when you compare tastes, take into consideration whether your taste is on the fringe.