1. He wasn't congratulated on his achievements.
2. He doesn't trust people online.
3. He didn't get invited to raids.
4. He didn't want to get Ventrilo he prefers not to use voice chat.
It sounds to me that the OP was not terribly interested in being a part of a team. I have to admit, I would have a hard time inviting people to raids that absolutely refused to get into Vent. I'm sorry, my friend, but real time communication is very important to success in raids. It is positively infuriating when someone wipes a raid because they missed an important instruction. I'm sure that some guilds can get by raiding without voice chat, but it's very frustrating not to have 24 people who can listen in and work with the team.
I'm sure the OP knew that his response would get lambasted by responders. I'm curious as to why someone so anti-social would even bother to post in the forum (except to troll.) I found that the responses reinforced the social aspects of the game. I think that Linaran of Ravenholdt hit the nail on the head when he suggested that a self-esteem issue might be the root of the problem.
Some people are just not meant to be in guilds. The original poster says that he will never be in a guild again. I'm with Gertrudis of Skywall when she stated "The OP needs to find a single-player game." Oreooze, I hope that you find what you're looking for, what you need, or both.