Originally Posted by mohitmadaan

Lets say the cost of transferring if $200 and value of these miles is $500, it makes perfect sense because we know she isn't going to travel again for years and the miles might just expire?

Originally Posted by hyderago

Not quite. If the miles are enough for an award by themselves (i.e. without pooling with your miles), then it's better if the miles just remain in your wife's account. When you need the award ticket, she can use her miles and get ticket on your name.