I like dubs, I like dubs a lot. I understand the process that the voice actors go through and I respect them for still wanting to do a job where they get bashed by people who think they have the slightest idea of how Japanese works. I find the voice acting to be great most of the time, but that's actually because I watch more than what's shown on TV. Most of the people that don't like dubs base that on 4Kids dubs or stuff you'll find on TV, that's stupid, that doesn't make up much of what we do get dubbed. To find a dub that I don't like is pretty rare for me, and those are usually 4Kids dubs, most dubs are good and have great voice actors on them. It's not like every Japanese dub is perfect either, I can point out handfuls of Japanese dubs that have horrible acting and just bad choices in them.
I don't mind people not liking dubs, but nearly 99% of the time, they don't like dubs for extremely stupid reasons. The cuts, removing OPs and EDs from TV airings...really, what the hell do those things have to do with the dub itself? Nothing. If you don't like the TV edits, buy the DVDs and support the damn shows if you claim to be such big fans. "But the Japanese don't have to buy DVDs to see it all!" Yes they do, a lot of DVDs have things that are cut out of Japanese airings and even if they don't, the Japanese anime DVD market does really well because people actually support the stuff. Then there are a lot of people that don't like dubs because they aren't exactly like the Japanese version. They can't be, otherwise a lot of the speech would come out really awkward, I notice it in fansubs all the time, others just think it's normal. And honestly, how often do those changes have any effect on the story? Unless it's a 4Kids dub, never. I really wouldn't mind people not liking dubs if they could actually pump out some good reason, often it's just a lot of misinformed people who think they know Japanese from watching anime.
There are a lot of dubs I liked better than the original versions, FMA, Furuba, Bleach, Galaxy Railways, Spiral, the list goes on and on. It's often because the originals of those dubs were really bad, like the Bleach Japanese dub, I hate it. The choices they made for the characters were horrible, none of them really fit the characters, I'm better off just reading the manga, which is all I do now that the anime is stuck in filler and probably will be for a long while to come.
I could write a lot more on the subject, but I don't really feel like opening up a can of worms.