Near where I live, that's the best way to buy new cars, trucks, and new houses(that don't ever get finished, to save on taxes). The first one is legal, the next 3 or 4 aren't. So the man gets 3 or 4 extra paychecks from the State of Arizona. Easy money! Of course he's married to all of them at the same time, so it's a bit different that what airpiraterob is talking about.and what if you're planning on having 3 or 4 wives?
On a more serious note, I've been happily married almost 4 years, but you never know what can happen.