It's still fun to play don't get me wrong when the usual people are in town or at a boss fighting, but as soon as one whale turns up everybody has to go into safezone or TT because of how crazy people can go with kit/runes/paragons etc.
It must be pretty boring for them as well because even if there's a group of 5-6 really good players they still can't compete against one of them due to the damage and damage reduction difference being so huge.
The main reason I have been put off recently is by the items having to be first found or brought from someone, then rolled to 3 slot (if you are really hardcore then 3 slot with additional stats)
Then buying/finding the XL or Holy shards, afterwards comes the quality orbing, and finally you get the enhancement stage (up to 15)
After doing all this there's a new set that comes out which then the cycle starts again and trying to get gold back from the item you made is poor as nobody wants to give anything for them.