I think the problem is, at least what I'm seeing here, is that the guild that you have and you're used to is mainly a social guild, with raiding as a side activity, or something extra. That's all fine when someone wants to be in the guild but not in the raid group. My old main is in such a guild, but not in the raid group anymore (due to stress from blood tanking wearing me out).

However, there are guilds out there that are specifically for raiding. My new main joined a sister guild for the sole purpose of raiding. If, all of a sudden, they decided to now be an RP and PvP guild, but I still wanted to raid, I would be screwed.

I don't want to RP and I don't want to PvP. If I wanted to continue raiding, I would need to either find a small group of similar minded folks in the same guild, or find some other way to raid. Usually that entails leaving for a raiding-specific guild. Saying that you shouldn't find a guild just for raiding because that's not the player you are is just like saying, well you shouldn't find a guild just to be social with others. You shouldn't tell others to have fun, that's no fun at all.

Just my two cents.