I hate when my limbs grow faster than my body and I am an awkward teenager
Just another case of "I f'd up, so its the stupid (insert chosen bit of kit here)'s fault".
Plastic reels work fine, I have never had an issue with 35mm or 120. Mine are always dry, so I can't say what happens otherwise, but they work just fine. I have screwed up a couple of times (not catastrophically, but frustrating none the less), but the reels have not.
If I learned on SS I'd probably feel the same way about them, as I am sure thousands upon thousands of photographers can't be wrong about them.
Its a matter of comfort, familiarity and preference - but definitely not a matter of some inherent superiority or inferiority.
I know, you're at an age where things have to either be absolutely without fault and God's gift to their chosen field OR the exact opposite, a curse and a bane of your existance. Unfortunately, even black and white photos are not black and white - they have shades of gray. Growing up is learning to see that. Learning to see that leads to sounding more mature. Sounding more mature leads to people on internet forums taking you far more seriously. See where I am going with this?
Oh yeah - there is also the phrase: "I screwed up, it was my fault". You prefer SS? By all means, use them. But don't think (like the wording of your poll suggests) that you have graduated to something that sets you apart from beginners and wannabes.
And please, please, go see the thread you yourself posted asking about the incessant polls... The ANSWER IS THERE.
Have fun with your new reels, I am sure they will work just fine.
Peter.