I totally sympathize, Alisa. I thought the same thing, and here's my take:
We all know there's more to life than stupid trivial superficialities like do we have scars, do we have this or that, etc. That includes a bag. None of us asked for this, or asked for any of the diseases we have, and if we could change it, we would, but we can't. That being said, I tell people IMMEDIATELY because I want to weed out the kind of folks who can't handle my ileostomy. Folks like that are probably - to be honest - pretty shitty people, and I don't want to associate with shitty people. So that's #1, LOL
#2 is, I open with this - "I had a near-death experience at 35 that changed my life." Then I tell them what that near-death experience was, and I tell them that I consented to an ileostomy because I didn't want to die. That really brings it home to decent people because they can put themselves in my shoes. It helps them understand what kind of choice I had. And then they look at me, vibrant and alive, and they can't tell that I have it and go, "Oh. Well, that's not such a big deal." Because really it isn't, lol. No man I've been intimate with or dated ever cared. One of them told me that it was part of me and part of what made me who I was, and we have to (as human beings) accept people for who they are regardless. Which was a really nice way to put it.
Personally, I feel that as ostomates, WE are more sensitive to it than anyone else because we FEEL "different." We FEEL not "normal." Meanwhile, our loved ones and other fellow human beings are looking at us as yes different and yes not normal, but not because we have bags (they don't seem to care about that) but because when you go through something so traumatic and life-altering, it changes you into a whole other person... your new appreciation and love of life and wisdom and understanding and HUGE strength that you've gained enduring such a thing RADIATES from you and touches everyone around you.
In short, have no fear, buttercup! The worst has already happened.