You had to have someone else play those arcade games for you? I'm not gonna say anything to that.
Anyway, the most upsetting thing about collecting, and what it's being ridiculed for here, is when it's random-based. You cannot control which stickers you collect, or rather, which trophies appear for you to get.
It's frustrating to have no choice but to hope to accomplish something in a video game, because that's literally what it boils down to.
Edit: In Melee, at least you could ante more coins in the slot machine to increase your chance of getting a new trophy.