I'm glad I saw this thread because this is exactly how I've been feeling the last few days. Me and my common law partner haven't yet applied, but we are getting our application together, and plan to file as soon as I have to go home to Canada.
Over the last few days we have been gathering letters from friends and family stating that our relationship is genuine and I had to explain so many times WHY we needed the evidence, and how the letters were just the tip of the ice burg and how we are doing it IS the best way for us...
I had a friend say that it would have just been easier if my partner had "put a ring on it"...she didn't understand that we'd still have to prove a genuine relationship if we were married. And she certainly isn't the only one who has said that, why is it so hard for people to understand that we just DON'T want to get married, that we are perfectly content being committed to each other.
And when I tell people how long it may take, they just look confused and pitying. No one understands!!!

Ok, I'm done with my rant, haha. I'm sure this will only get worse when we actually do file and we're separated and people are constantly asking me were he is...
Oh well. It will be worth it in the end.