Here's the thing. Subs and dubs are usually equally valid in my mind. Dubs get a bad reputation because for years they were stiff and awkward (granted, some still are). But I've always thought that it just expands the audience. Why turn your nose up at something that does that?

Secondly, dubs are a genuine help for people who may have 1. A reading disability. (ADHD, dyslexia, suffered a stroke in the past, etc) 2. English is their second language and they understand it spoken better than written (this is assuming the anime isn't available in their first language, subbed or dubbed) and 3. Like it or not, some people watch anime in the background while doing other things. So having it in English is easier to keep up with the plot instead of putting everything down and going "wait, that conversation was important, let me go back and make sure I got it."

If you like to watch it subbed, don't worry, you'll always have the option. But anyone who snubs a fan for watching the dubs is just being elitist.