That's as good a reason as any to catch a Pokémon. If you fall for a Pokémon at first sight, you obviously were meant to train it.

[He whistles, and within a few seconds his own Chatot flies in and settles down on his shoulder.]

I spent two days trying to find one, back in the day. So of course Haro decided it would be hilarious to follow me around and pretend to be a run-of-the-mill ghost the whole time. I got the last laugh, though.