Like most people (I assume) I hate the event mons. Wtf do you mean I have to live in likeonee country to get some mythical, just treat it like a story legendary.
There is no reason a pokemon shouldn't be obtainable by gameplay
I feel a special connection to some of my event Pokemon because they are keepsakes. I appreciate their rarity because I actually went to get them, or plugged in the code, or whatever and others did not.
I'm old, so I remember missing out on Mew when there were extremely limited North American mall tours. Never won the Nintendo Power contests. Missed, skipped, or was wholly unaware of basically all of these. I refused to risk my save files to GameShark one, and I didn't understand how to execute the Emerald glitch to get one without an event item.
But then, I got to use my Adult Superpower of Spending Money on Whatever I Fucking Feel Like on Let's Go Pikachu with the Pokeball Plus. Now I have a Mew. Its name is Anne.