EverQuest 2 Expansion packs question

What is up with those EverQuest 2 expansions packs? It is so stupid thing to me. I cannot believe that the game is that full of bugs, so the packs and patches are released in that big number. Has someone else the same opinion about this? What do those patches even do for a game? I just cannot see what the difference is.

The point of patching online games is to add more quests, more items and to fix small issues about the game. In every patch and expansion pack, you have a set numbers of those, so the players can continue to play the game. Just imagine if you did not patch the game, and once finish all the quests. What will you do next? Just sand in one place and do nothing? Therefore, just download the patch, install it, and continue to play the game. EverQuest 2 is well worth of effort and time.

the expansions introduce new zones to the game, i think its stupid to charge 39 bucks per expansion but hey soe is money hungry