Some dubbing, especially that on like Adult Swim, although I suppose I'd more or less call it translating instead of dubbing, is good.
But most of it...well, you miss a lot. A lot of times, the deeper meaning in things is taken out, and sometimes even key points, so that if you watch it closely, it doesn't make sense.
I dunno...I'm just going on about nothing, so I'll leave you now.