The coin in your hand may not be the coin you like, just like your partner may not be the partner you like, it may just be your second choice...
You can't ask a tall, rich and handsome man or a white, rich and beautiful woman to obey you in everything, that's called a dream, the same is true for coins.
But there is one difference, you can choose coins at will, because it is one-way, you only need to overcome the cost barrier, while changing partners still depends on whether others agree...
