Well the majority moved to Kickass including me. Both websites are horrible and way outdated. Kickass has quite a huge number of bugs.
If there was proper management to these websites using the would be a nice experience. I however tend to go to TPB to look for older things that I can't find on Kickass.
Websites are quite outdated, yes. Not sure why they don't plan to give it a makeover. Perhaps the old styling gives the best performance and loads smoothly on slow connections.
Public trackers are generally shit. I used to use piratebay but haven't bothered with it in years and you're best off joining a private one where people actually give a shit about their ratio and don't just hit and run all the time. IPtorrents is good for a general mix of stuff especially tv and movies and what or waffles for music.
I used to be active on a private tracker, but there are not enough leechers to justify my pc staying online all the time for a few users. Open trackers give you thousands of leechers. I then happily seed around 500-1000GB per day if it the movie is very popular.