Batman is a lot more than just a cape, a cowl and a scowl- he's a deep and interesting dude who is so multi-faceted his writers virtually never run out of new material.
But for every good story arc or issue there's another which completely misses the mark, making readers wonder “WTF?!”
Like the time Batman dyed his Batsuits different colors so goons wouldn't figure out Robin's secret identity, featuring Batman wearing a rainbow Batsuit while saying the line “they’ll find no gold at the end of this rainbow… only prison.”
And then there was the time Batman agreed to sing Christmas carols with officers from the Gotham PD- and no crimes were committed that night in Gotham, seemingly thanks to the songs sung by Batsy and the boys.
Think Batman singing is weird? Not as weird as the Caped Crusader laughing with the Joker, impregnating Batgirl or wetting himself during a mission.