Churches are free to give or withhold their blessing to whatever kind of relationship they see (un-)fit. Give me one example, just one, of a church in the Netherlands or Belgium that was forced to hold a marriage ceremony for a union it does not agree with. I know that there is none and I am convinced there never will be one.

*esprit d’escalier update* Just wanted to add that most European countries have had laws requiring equal treatment of men and women in employment matters for decades, yet this has never resulted in court orders forcing the Roman Catholic church to ordain women priests. So why this would suddenly become different now laws have started to treat couples equally is beyond me.

Where I do of course agree with you is that churches should indeed not be forced to accept homosexual marriages. That is, I certainly hope that those churches will change their views and I am glad that some already have - but any change in this respect has to (and can only) come from the inside, not from the outside.