How do they expect to keep these churches when the parisioners stop giving their donations?
Turn 'em into gay brothels.
The diocese bishop can sell the church properties, and donate the money to sponsor Gay Pride parades
One good reason for conservative Christians to NOT have their church owning valuable assets, because these assets can be taken over by whatever group decides to take over your church. The more assets, the more tempting the takeover target
Ideally, your church building should be leased, so that if the tithing congregation leaves, it ALL goes. It gives the membership much more leverage against the leadership as well