Complaints about RDF PuGs and mal-treatment are some of the most common posts both here and the official forums.
Based on the amount of QQ about RDF groups it's easy to get the impression that Pugging is a non-stop-series of failures. However this doesn't coincide with my personal experience. While I've had a few bumpy runs in the past and occasionally have to replace players, the vast majority of RFD runs are actually fairly smooth. Sure, a few deaths are acceptable and so is an occasional wipe, as long as you keep progressing.
Based on the posts here I also get the impression that the PuG situation is somewhat worse in the US when compared to Europe. So please pick the option from eother US or EU, depending on your location.
So I made a poll. (will take a few minutes to make)
Obviously "bad" experiences isn't a very objective term, but it's as good a benchmark as any. If something frustrates you or causes you to leave/kick/aggravate, well then obviously it's not a fun experience and hence "bad".