To Resize Connecting Rods or Not?

My opinion but, everytime a rod gets resized, it gets weaker. I had an unknown set of 7/16" rods in a big block Chevy boat engine. Thrown together at the end of the season. Had it out 3 times. Tore it down for the winter and checked the rods, they were already out of round on the big end. Sold them to some street guy and bought a good set of used Crower rods, those rods never got out of round over the years till I sold the boat. No way of knowing how many times that set of rods had been resized, or maybe it was a bad metal recipe.