I am a fan of all wildlife and can appreciate all species. I really really think rattle snakes are amazing creatures and next year would be interested in going so the Sinnamahoning Rattlesnake Hunt to check it out.
If I found one in the woods on a hike, I certainly would take quite a few pictures, and teach my dog the e-collar fury of messing with snakes.
I can see and jusitfy killing one for the hunt, trophy, and meat. But one only. It is on my bucket list to get a nice rattler some year as I learn more about it.
However, that said, legal or not, if one presented itself regularly in the immediate vicinity of my house or the back/front yard of our cabin - I would somehow capture and relocate it far far away. Way too many children, a fun little dog, and half dozen chickens to constantly fear them getting struck. You could be the most attentive parent ever, outside with your child, 5' away, and they could get struck without you seeing it ahead of time.
That said however, I have went on (2) Copperhead calls (I am THAT neighbor that comes and catches snakes in/around your old neighbors house for her) that ended up being a Milksnake. I wonder how many of these critters have got a fatal attack for looking mildly similar to a Copperhead. I have caught several hundred non-venomous snakes, I saw one Rattlesnake, and have yet to find a Copperhead. I would love to see one some day though.
That said, the idea of stocking them is quite a stretch for me to comprehend. However, in certain places I would not object. Want to dump them in Sproul, ANF, bigger SGL's, etc., do it. They were native to much of the state and much more abundant. Their populations were seriously hurt back in the early 1900's just like the Whitetail Deer. We may not manage animals correctly, but at least PA tries. And is willing to adapt and learn (hence the reason our gamebooks change EVERY SINGLE year lol)