When two men live together or two women live together, let's start calling them "gay partnerships." Of, if more than two of the same sex live together, let's start calling them "gay unions." Let's just call them what they are.
If they want to make it legal (not marriage), that is up to them. If they want to adopt children, I guest that is okay, but I don't think it's healthy.
Now onto the weather. What's normal? Over time, there is an average, but that can change over time.
Both of these subjects are food for thought.