By 2020, in Germany "registered life partnerships" probably will have the same rights as married heterosexual couples, but it is possible, that they will not be officially called "marriages" for symbolic reasons (appeasement of large parts of the CDU/CSU) even then.
How can all of you German members claim this, when it's already clear since 2012 that about half the members of the Bundestag already fully support gay marriage? ........
When 3 out of 4 Germans, including 2 out of 3 CDU/CSU voters already support gay marriage, it's just a matter of time, in my opinion, before it'll become a legislative reality.
If you are so concerned about redefining marriage (in a country who's citizenship you don't even hold), why don't you write a letter to Dr Merkel explaining your issues.
If her office can be bothered to pay the postage fees to Sweden you may get a reply and maybe if she has a lot of time on her hands she might even personally sign it!
The reason why folks are concerned about this is because
It's a human rights issue.