Fundamentalists have married clergy, but oppose abortion, homosexuality etc. The Bible says that clergy can marry, so it's contrary to Scripture to not allow it. The RCC acknowledges this, however, and says the policy may change. There is a shortage of priests, so this may be the trigger.

As to setting up ones own church, I'm not "comfortable" with it because then you can get all kinds of loonies setting up a church that gives wrong teachings etc. I'm not sure what the solution would be, though, when people feel called and find too many obstacles from established churches.