Replicas of me

Sometimes I wonder how the world would be if everyone was a replica of me. Would it be a better place?
I'd like to think so. But for that to happen, I'd have to be good to myself. I'd have to be understanding, accommodating and cooperative, or I won't like it.
Thinking this way gives me a simple frame of reference to guide my actions, towards the greater good, and towards myself. If my actions would negatively impact me, if I was on the receiving end, then I shouldn't do it, and vice versa.
It is true that if an action of mine would make the condition of some people, in a world that is inhabited by replicas of me, worse, then it's a bad action. The effect should be considered on everyone. Something that benefits only a few on the expense of others will not work, since I could be anyone of those affected.
There is a caveat, however. Having everyone be a replica of me is nice and everything, but for it to have a meaningful impact on my actions, it has to apply in a world where it doesn't.
I can't decide what's good for others. I can barely do it for myself. Oftentimes things go exactly as I planned, only to my own disappointment. But I am the most reliable measure I have.
And sometimes I wonder what would happen if I was on the other side of the wall, born and raised to believe and behave differently, and to think of myself, on this side of the wall, as the enemy. What if I had the power and the arms to defeat and kill me, should I do it? After all, I honestly believe I'm right. My actions are justified and blessed by my belief system, and I don't see anything wrong with it.
But Should I?

Behind glass doors

It was not the first time I see it, but this time, something felt wrong. I watched, as I waited for my flight at the airport terminal, the view of people gathering inside a small room with all glass doors. There was a lot of activity going in and out of the room, but still, the room seemed very confining.
I wondered how it felt looking at the outside wide space from the inside. I know I wouldn't like it. I wondered if it was an act of consideration from the designers of the room to make it with all glass walls and doors. But on the other hand, if you're inside, your confinement is displayed, and you will get a constant reminder of what you're missing outside.
And it's not just at the airport. Similar confinements and acts of isolation and rejection are all but widespread. This is a clear discrimination. To be confined to certain designated areas, or asked to leave a building, to stand out in the cold, aren't exactly the most considerate things to do to fellow human beings. It just doesn't feel right.
Oh, and on a related note, there seems to be a flaw in the design of these designated rooms. They are not well isolated from the air outside. You can smell the smoke if you walk by. We just can't accept that, can we?