Well, so far the most memorable times I have heard those words were when I was 22, just married 4mo, and my husband was drafted back into the military to be sent to Iraq in '90 for a minimum of a one year tour. And who told me those great words....an 18 yr old who self proclaimed she had never been in one single serious relationship, and really had no intrest in ever being in one. The conversation went like this...."Gee, I know exactly how you feel. Hey, I get to go to this cool party this weekend, lots of guys and drinking...cool huh?" No, she was not inviting me, not that I would go, but she was just bragging/rambling about all the fun she was going to have "partying" over the upcoming weekend while I was saying my final goodbyes to my husband that weekend.
The next most memorable time I heard these words were when I lost a child. People who did not want kids, never had kids, and never lost a child told me those five words....and of course they followed them with proof of how they knew...."Oh well, you can always have another kid." Children are like bic lighters you know......lose one replace it with another.
I agree you need to consider the source when those words are uttered......but I honestly still believe they have no value if you are truelly trying to comfort someone. I believe, on the whole, while the injury is still fresh, those words inhibit a person's ability to receive comfort.