Coming out to Parents
I have a similar conundrum but with additional complexity. I'm interested in someday having kids with an OSO (in addition to kids I already have with my primary), in which it's not just an issue of coming out as poly to my parents, it's an issue of introducing my parents to their future grandchildren.
In that case, I'm thinking I'd have to come out and take whatever lumps there may be. I can't deprive a kid of his grandparents (and grandparents of their grandkids). And I'd hope that if they fall in love with their grandchild, then maybe they'd forgive me a little? Maybe. ;-) And even if not, as long as they love the kid, then its worth it. (psyching myself up for this possibility)