appreciation-enjoyment-curve

When you’ve never experienced loss, you can have very high, untainted, raw enjoyment - but the depth at which you appreciate that enjoyment is shallower; you don’t have an understanding of how bad the absence of that enjoyment can be. When you’ve experienced loss, then your appreciation level goes way up, and maybe the things you need for enjoyment become simpler - you substitute deep appreciation for that raw, virgin enjoyment, which you’ll never have again. Just as the virgin enjoyer does’t know deep appreciation, the veteran appreciator can never go back to unattenuated enjoyment.
Is this a wisdom or a cope?