For me, I generally think that the benefits are generally worth the risks, so long as everyone is honest and so long as it seems that everyone is prepared. It may not -always- work out, but I, atleast, think that it works enough to make it worth my while to give it a try.
Like any relationship, there are always risks. More than anything, it depends on the particular people involved. You seem to think you're prepared, what about your potential partners? Are they prepared?
I still maintain that you never are going to know if you were prepared until you experience it, no matter how much you believe you are. Similar to not knowing how you will react the first time you have a gun pointed to your head -
no matter what you believe.
I do not think there is anything inherently immoral about "swinging", but society does bring a lot of pressure to bear in terms of derision, ridicule, mockery and some times outright ostracization. These factors sometimes cause regret after the fact, even if the parties were prepared prior to engaging in the behavior. Maybe it
shouldn't be that way, but it is.
As I mentioned earlier, I have had both positive and negative experiences in this area. Each to their own, I guess it boils down to whether one believes that "it works enough to make it worth my while to give it a try".
If you actually do experience this lifestyle you will more than likely have good and bad times, like in nearly every pursuit. Again, this doesn't make the practice "immoral", nor should it be proscribed by the government. Most people with strong opinions against swinging are, consciously or not, basing their position on some religious concept of evil - their god said it was bad, therefore immoral. Most people just don't care one way or another, unless you are perhaps influencing their children in some negative way through lack of discretion.
Again, each to their own - live and let live.