The tourism question would be a good one - if the economy factor affected was there. But it is not. There is no animal sex tourism. And why should it exist in the first place, you want sex with an animal - you buy one.
But it's all about the economy and money spending.
You have to marry, have (normal) sex, spawn kids, buy houses etc which means spend more and more money. Avoiding a cliche life and having a sex toy (animal or rubberdoll, or whatever else) is not helping the economy during the crisis.
Thus I don't think this thread should be in politics and religion as it's not really politics or religion question - any politics or religion would want to help the economy. Some states/countries legalized same sex marriages just to help the economy where selling houses was dropping and while one may say it's politics as it's law making, it's not really.