>>55262488Megas were “good” because of the idea of your favorite Pokémon being elevated to a god, and the idea a neglected pokemon being allowed to have value instead of being stuck was a worthless shitmon.
In practice. It pretty much Game Freak saying all but 46 Pokémon are unworthy of being ace-mons. Balance wise. Most went to pokemon that were already decent to overpowered already. Most of the few that got them and needed them couldnt compete with the broken megas making them pointless. the very few that went to Pokémon that needed them and were actually good ended up being a monkey’s paw when megas were erased while the Torkoal and Pelliper laughed their asses off because despite not getting flashy forms game freak respected them enough to give them actual buffs
Theres also the cool factor/appeal the masses
Z-move: do a silly dance
Tera: put on a oversized sparkle hat
Dyna: 50/50 on whether you end up like a cool kaiju or a parade float
Mega. Become a super saiyan (some lean into goofy like Slowbro, but most went in the direction of cool)