are there really loads of gay couples queueing up to get married in a church that they know despises them?
Would you ask "are there really loads of black people queueing for the white-only seats"?
There are plenty of gay Christians, single and couples, who attend church. They may not all be queueing up for something they're not allowed to do, but some are, and when the situation changes then more will be :) There are certainly Christians campaigning for this change, such as Inclusive Church and the Lesbian and Gay Christian Movement.
I wouldn't say "the church" despises gay couples. They've made a rule which gives that impression, but I consider the church to be a collection of people, ahead of it being an institution. And many of us definitely do not "despise" gay couples! Many of us within the church disagree with its current position, and hopefully this rule will change.
Should those of us wanting change just sit back and accept the status quo? I think not. I think Jesus would have had no problem with gay people getting married - he never even mentioned homosexuality, and gay marriage in no way breaks the commandments to love God and love one another. The church is about doing what Jesus would have wanted and if we reach different conclusions about a specific issue then campaign for change, education and forward-thinking is my favoured response.
The Church of England is supposed to be a broad church encompassing a variety of styles of worship at all stages along the spectrum. A CofE church could be Anglo-Catholic, fundamentalist, evangelical, liberal, or many other things. From one church to another they already can and do disagree on many things, which I think is entirely healthy, shows that Christians can have some humility, tolerance, and not claim to know it all.
For this reason I think it should - at the very least - be possible for each individual church/vicar to make their own decision about this, with their own conscience.