Could or Would you do it?
Yes I could, no I wouldn't
If so why or why not?
Because in my view committing that kind of romantic love and dedication is cheapened when it is spread out that way. I am not saying there has to be ultimate sacrifices all the time, but there needs to be some commitment.
Meaning just because you can do something doesn't mean you should.
What would be the pros and cons specifically of a 3 way marriage?
Pros:
Easier on finances to have two working parents and one home maker
Cons:
If one of the 3 isn't pulling their weight it could lead to more constrained circumstances.
Time management could be an issue.
Health Insurance could be through the roof
And do you Support Multiple marriages?
In theory Yes, in practice No, not unless it is for the purposes of rearing children