Skysoarer,
The Internet is a vast ocean, but you must trawl it with a net of your own design and construction. What you wrest from that ocean will depend entirely on where you trawl and on the design and construction of the net you choose to use.
I too am sometimes disappointed to see the invective and vitriol that passes for comment and discussion but it merely serves to remind me we are all human with every failing and vice known to humanity (and probably a few which are merely suspected).
When the vitriol becomes too corrosive, I simply ignore the posts/thread/forum for a while and things tend to sort themselves out.
Personally, I find Pprune to be one of the most fascinating and potentially beneficial uses of the Internet I can imagine. I hope it continues for many a good year yet. I also take my metaphorical hat off to Danny and his tech-crew for a difficult job superbly done.