Ok, personally i'm all for polygamy, i do not think it should be banned based on what it represented in the past.
Incest? As has been said father - daughter, probably not ok, but between say cousins or even brothers, knock yourselves out. Children from incestuous marriages though, that's a different discussion.
As for bestiality, i'm really surprised you put it in with all the others, big difference, you might as well have included pedophilia if you think bestiality is in any way similar to gay marriage.
Now even though i think polygamy and incestuous marriages should be legalized, these are far more debatable than the issue of gay marriage. Reasons for this have already been presented.
thegreekdog wrote:Polygamy - You (and others) believe that the nature of polygamy is often abusive, unequal, and against the moral sensibilities and culture of the US.
Gay marriage - Some believe that the nature of gay marriage is abusive, unequal, and against the moral sensibilities of the nation and culture of the US.
Polygamy may be and certainly has been in the past abusive and unequal. As for moral sensibilities? If your morals dictate that consenting adults can't sign a glorified contract with other consenting adults, well your morals might need changing.
How exactly is gay marriage abusive and unequal?
thegreekdog wrote:Polygamy - You (and others) believe that the Constitution offers protection only for contracts between two individuals, per the plain language of the Constitution
Gay marriage - Some (including myself) believe that the Constitution does not offer protection based on sexual orientation, per the plain language of the Constitution.
I don't know about the constitution, but i'd be interested in hearing what YOU think, not what you think the constitution says. Isn't marriage a fundamental right? Shouldn't all consenting adults posses this right?
Surely you don't want such a right to be decided by a simple vote? Fundamental rights don't work that way, unstructured democracies fail.