I don't see Religion going anywhere anytime soon.. Belief and consciousness is an evolving process. As we humans shed our old and worn out belief systems (i.e. fundamentalism; Islamic, Hindu, and Christian to name a few) there is going to be a change in the collective consciousness, and some resistance to the acknowledgement of a Higher Power or being part of a religious body, mainly due to having felt cheated by out-dated and ridiculous sounding dogmas.
This resistance and reluctance to admit religious affiliation can in some cases be based on how crazy certain religious people are, and the desire not to be "one of them." It is natural to try to separate from ignorant people.
Also, another take on it is that now more people have access to the internet and can investigate any religion they want, so you find people with very eclectic viewpoints. These people might not have a religious affiliation, but are believers in God.
However, you do have some points noticing a trend, but making the huge jump to "Religion is done-for" is Fake Sugar Dick (WARNING, NOT THE REAL SUGAR DICK!).
Pew Research has some good stuff on this topic..
http://www.pewforum.org/Topics/Beliefs-and-Practices/Importance-of-Religion/http://www.pewforum.org/Age/Religion-Among-the-Millennials.aspxJust like when Francis Bacon stated: "A little philosophy inclineth man's mind to atheism, but depth in philosophy bringeth men's minds about to religion," humankind will pass through this phase, the shedding of old beliefs, and to a greater understanding of Reality.