I think bad dubbing is the downfall of all good anime.
But seriously, I think it just depends. Some Slice-of-Life anime can be so interesting that I can't wait to see more, but some of it just bores me out of my mind!

The last good anime I saw was House of Five Leaves. The style is a little different compared to most anime, but the story really kept me watching.

I also recently tried watching Densetsu no Yuusha no Densetsu (Denyuuden) because I thought it was going to be a good fantasy anime, but the first episode already had me raging because of the obnoxious and annoying characters!