For your first reason:
Server administrators are working on that.They want to hire some new admins but they can't hire everyone,just as Irish and Randy said on Alex application
Second reason:
If you see hacker you know that you can record his illegeal modifications or hacks and post it on forum.
Third reason:
It can be cuz of your time zone.But I very often see more then 60,70+ players online.
And umm there is nothing more than killing and capturing?
It's not true,there's much more things to do.If that's your decision then ok.
Goodbye and all the best mate.