Perfection not needed, just shoot and develop as best you can and have fun with it.
There isn't room in this world for 100 Ansel Adams'es anyway.
Besides; Only a very few nerdy Apuggers will ever look at a print and go "must be shot in the wrong zone and developed to the wrong contrast for sure", normal people don't care
The PROBLEM with saving film is when you have a discontinued, no longer available, film in your stash you don't want to use it or you "save" it for special purposes.
So, to do my part, I vow before all that is film, to go and use 3 rolls of extinct film from my stash this weekend!
I have a Roll of Neopan 400 in 120 in my Rolleiflex 2.8F right now, no problems using it really.
- I just shoot very little in general, but I know that 400 ISO film needs to be used as they don't store "forever".