Great post! It reminds me of my same EXACT situation when I first started fishing Mill Creek back in the early 70's, when it was a stocked stream. Me and my one buddy used to ride our bikes down (we lived very close) to the "crick" to fish on a regular basis, for years, until we could drive. Then, we learned about wild trout and started fishing for them pretty much exclusively.
It's ironic, that it hasn't been stocked for a good many years now, but I caught one of my PB wild trout from there just two years ago. I love looking back on the good ole days. And yes, had it not been for stocked trout, I'd never be where I am today as a trout fisherman, even though I only pursue wild trout now.
I've shown this pic before, but I wanted to share it again here, because it shows my fishing buddy (he's on the right, I'm on the left) that I mentioned. He passed four years ago at 63. I miss him badly. He caught the wild brown in the pic.