Because you asked direct questions I will answer them, rather than providing a list of snarky remarks.
What is the average age of your workplace?
I work for what I believe is actually a fairly young company. The average age is probably 30, possibly slightly higher but I wouldn't expect it to be over 35.
How easily do your coworkers accept and absorb new technology?
We're a bunch of geeks - we LIVE for new technology. That's not to say we accept everything with open arms, there's plenty of bitching when something bucks the norm, but for the most part we like new stuff and we like integrating it into our clients' environments.
Are most IT environments like this, where people refuse to learn anything about new technology they don't like, or did I just get stuck with a batch of stubborn case-screws?"
I believe most IT people are interested in fancy new technology, making it work, and integrating it with things they are already familiar with. However, there are people who are just in it for the money and probably don't have the interest in geeky exploration. They took required courses and fulfill a specific role. If you ask them to do something outside of that role they will become agitated quickly.