Facebook killed/is killing forums. Folks are lazier than ever these days and don't want to take 40 seconds to create an account somewhere to talk about something they could talk about on Facebook where they already have an account.
Another point.... People like being rewarded (by imaginary internet points)for posting stuff to the internet. For example: on facebook, you have the like system. On reddit, you have the vote system. Both of those sites are booming. Here, you post something and if you're lucky, you get flamed. The rep system we used to have was broken. Giving someone rep only once every few months wasn't cutting it. My point is, Ryan is right. Its time to upgrade if you want to keep things alive. We're living a 2000s forum here in 2016.