I remember hating this game when it first came out, but I've grown pretty fond of it now that I've had time to replay it twice (the first time doing my very first Nuzlocke back in 2015 or so, the second being my current run using a Castlocke ruleset using my OCs). There are lots of flaws, of course (the lax difficulty, the unmemorable characters, the bland and wish-washy story), but there are loads of good things about this game (the Pokémon diversity, Mega Evolutions are my favorite battle gimmick, arguably the best clothing customization in the series) so I can't say I hate it too much. If you want a good story, it's much better to create them based on any Pokémon gameplay anyway.