Hspdr,
“Currently, a lot of people marry - or enter a civil union - for security.”
No they don’t. I am married and I know plenty of married folks. Not one of them married for the utility of security.
“It’s a contract, with exit clauses, that allows them to gain some level of security that their partner will not abandon them and just take all their money, and the kids.”
It is a contract, one that encourages stable relationships for childbirth and childrearing.
“If one was freely allowed to be polygamous, wouldn’t that completely obliterate that?”
Of course not. Polygamy is based on consent - the wives, or husbands, know full well what they’re signing on to.
“I mean, if it would now be perfectly normal for me to marry another two women in addition to my wife, wouldn’t that greatly impact my current wife?”
See, you’re failing to see your own argument. The idea here is consenting adults, same as homosexuals. A wife couldn’t be any more forced into a polygomous marriage than she could be forces into a bilateral marriage with one husband. In your scenario, your wife has a choice to opt into the polygamy, but is not compelled.
It most certainly would impact your wife negatively if you decided to marry multiple women when she didn’t want you to. It would also impact her if you decided to marry a man and end your marriage to her.
“She’d probably want a divorce, and hence make the point of allowing polygamy… pointless - and creating a very bad situation for her, as initiator of a divorce with no reason clearly supported by law.”
Reason supported by law? Do you have any idea how easy it is to get divorced? If you have something as vague as ‘irreconcilible differences’, you can walk.
“So, allowing polygamy would in fact erode the security of marriage to a great extent, and hence create the potential for harm for a lot of people? And possibly increase the rate of crimes of passion, depression, even divorce?”
A bit of a stretch. I suspect marriages between multiple partners can be just as secure as bilateral arrangements - again, assuming you believe in the consenting adults rule. Moreover, one of the factors that bind relationships even tighter is the birth of children - something nature has not afforded and will never afford homosexuals. Polygamists can have all kinds of kids, broods of them - it is arguable that the more kids, the more the social glue between the family members. Between the natural bond of family and the incentive to stay together because of draconian alimony and child support requirements, there’s an argument that polygamy is no less ‘secure’ than traditional marriage.
"Again, gay marriage does not harm anyone (execept for moral insult) "
I am morally insulted if I find two people having sex in the middle of a public sidewalk. Should we do away with that moral insult legislation?
I think you’ll find that separating ‘social engineering’ and ‘moral insult legislation’ to be inseparable in many regards, certainly not distinguishable with any precision.