The Pokemon Movies have been hit or miss for me. Mostly miss. In fact, some of them have not aged well. Heck, I admit to only liking certain ones because of the Pokemon that show up.
The main problem I have with a lot of the movies is that the stories don't work well to some degree. They could definitely use better writing in quite a few of them.
I mean, I love Celebi's ability and the concept of Dark Balls in the 4th Movie. However, the Time Travel plot just doesn't work very well.
I absolutely love Jirachi, but the 6th Movie did not make Jirachi all that believable as a character, given it's life story.
The Manaphy Movie might have worked if they had May save the day instead of Ash, but it does have problems beyond that.
Finally, don't get me started with the problems of the Victini Movie(s). Just don't.
So yeah. I may not be a big fan, but I watch them because... Pokemon. Which I am sadly addicted to.