Well, I think the question should be reversed. I've always found people without a special interest too dull and boring to have as friends
I don't care if it's stamp-collecting or building swiss clocks or Amiga, if they have an interest in things other than world news or what they bought recently or everyday things, the larger the chance of doing interesting stuff together rather than rehash everyday things.
In answer to the original question, all my friends are cool with my Amiga interest - but then I have so many other interests as well that I never get anything done with either of them!
Except perhaps one that went all posh and normal on me as soon as he got a salary bump+wife. Could be a side effect of the specific wife in question.
Even my Dad is coming around, after 20 years. Hehehe.