These threads, in escalating amount of text with the first link being the simplest one, covers a lot of core design problems with WoW’s PvP, and tells you a lot of why people behave the way they do today in the group finder.
If you actually managed to read through it all, then good for you and I hope it made you think more about why things are the way they are today.
If you didn’t read through it, then there’s no need for you to say anything since it has probably been said already in the many other threads that exists. Mkay, thanks, bye.
(There’s no need for you to read it all in one sitting. It’s perfectly ok to just read a little bit at a time, and if you find it worth reading more of, then you can always check back later and continue then, a little bit each time in a pace that fits you.)