As an atheist, I might not be the best person to speak on it, but I can provide and outsider's opinion...
Religion and Faith often go hand in hand (since most Religions require certain measures of faith)...for example, any religion with a deity require a certain amount of faith in order to embrace it...you have to believe in something you can't see and believe in certain claims for which there is no physical, tangible evidence.
I think, in many cases (not all, but many), people attempt to make a distinction between the two and separate the two concepts when an official religious organization gets into some less than desirable behavior.
For example, if a Christian church gets involved in a scandal, and people start critiquing Christianity as a result, many Christians will be quick to mention that "Organized religion isn't good, but faith is good"...however, attempting to separate the two ignores the causal relationship between the two.
Organized Religions are the result of multiple people, sharing the same faiths, doing just that... organizing. ...forming a collective group of like-minded people.
As far as "whether or not faith is a good thing", I'll reference this quote:
With or without it, good people will do good things; and bad people will do bad things...however, for a good person to do bad things, and a bad person to do good things, that takes faith.
I think there's a large measure of truth to that quote. There are times when a fear of a higher power and a judgment in the afterlife have kept groups of people on the straight and narrow and brought about stability in areas that would otherwise lack it...the flip side of the coin is that there are other instances when groups of people go to war with each other, when they would otherwise get along just fine if it weren't for the fact that they believe in different deities.
The Comedian Patton Oswalt does a great bit about it called "Sky Cake", I won't embed the video directly due to some of the "blue" language used, but it's the first video that comes back in the following search:
https://www.youtube.com/results?search_query=patton+oswalt+religion+sky+cake
He, comedically, sums up the pros & cons of religion and faith.