Absolutely worth it. Had mine (MK3) for 5 years now. Besides having keys to play, I really like using the knobs to record automation, and the pitch stick to try out "bends". Those are also great for sound design in your favourite synth. I don't really use the drum pad (fun but impractical) or the other features, but they're there.
It can be hard to describe, thus my interest in what causes it. For myself I've somewhat narrowed it down to generally somber and emotionally-charged moments.
The vocal/scream breakdown in the middle, though I think it's important how the whole song sets the stage for it:
It can happen in songs with different moods though it's more rare, and I kind of think those moments still share some qualities in common with the examples above.
It's all fun and games until you brake and the whole thing slides down and covers the front windshield and you can't see anything. Source: I was lazy about this once, but never again.
I agree the OP's pepper is not as orange as the one you posted. I find it interesting that you'd call it yellow.
Anyway, I hope you didn't take my questioning as adversarial. Peppers are great no matter the colour.