It isn't that they are mirages. Great fiction is based on what is true. Many of these famous characters are even created by men. I have myself met many of these mythical creatures, and even dated a couple.
The fact that they are rare is what keeps us hooked. That and the fact they are two dimensional on screen, free of flaws, fated to utter incomplete perfection.
Now that I have lured you in with my educated ruminations, I bring you back to the base reason I started this debate. The men of Grey's Anatomy - whom we so lust for but yet if we dealt with in reality would so suck.
Let's start with the obvious -
The flip side,
The longing side,
Finally, the romantic lead,
The key to a good romantic movie or book is one believable romantic male lead and the key to a good TV series is several. The show inevitably has to jump the shark – not because the writers get stale or uninspired, but because eventually when we get to know the characters long enough we see more of the flaws than the fantasies.
I’ll still enjoy it while it lasts. I know who my favorite is, who is yours? (Men in this case would be even more interesting to hear from, but so much less likely to have anyting to share.)