Are peptide protocols the next frontier or just another hype cycle?

Peptides such as BPC-157, TB-500, and Epithalon have been Received as miraculous by healing, longevity and rejuvenation. I have been using BPC for tendon healing, it did work, or perhaps my body simply healed over time. The peptide market reminds me of early nootropics: anecdotal, scattered, hard to prove. Do we really know the long-term immunological risks or hormonal feedback loops from continuous peptide signaling? Those who have tried it: what biomarkers did you monitor, and what did you find out when you quit? Some supps which I take for stress and wakefulness are ginkgo, ksm66 and moda from ndepot, nowfoods and highstreetpharma. Is this the forefront or just another short-lived biochemical pleasure?