interesting point. glad i decided to learn to solder recently instead of using the sharkbites. i did buy a couple to temporarily terminate pipes. they were great for that.One consideration that a lot of people fail to think of when using them to connect copper lines in lieu of soldering is that you've got to put a bonding jumper across them (in a lot of cases) since they're nonmetallic. The metal piping system of the house has to be electrically bonded in its entireity and using a Sharkbite interrupts that bonding continuity.