I think I know why I should have left my current guild when I quit raiding.
My guild's priority shifted to raiding 2 years back. That's how I came to join them. I wanted to raid and they were starting to raid on their own.
Things were good at the time. They raided at the right pace for me and I got to see lots of encounters that many raiders take for granted.
Then the raiding picked up, more days, longer hours and I could no longer keep up.
But since our guild wasn't originally a raid guild, a few people remained that didn't raid and I also was welcome to stay and fill in now and then.
It sounded like the perfect match still. I could in some way be involved with what was going on. I would get to see a few bosses that I hadn't spent any time during the learning phases on. And I could sometimes still group in 5 and 10 mans with some efficient and effective players.
But along the way the guild changed a bit and I did too. The guild's 25-man group started grouping more with themselves in the 5 and 10 mans (no surprise there) and I started caring less about getting one more badge or one more timed kill. My goals and the guild's goals had diverged even further.
And perhaps I've done a disservice to my guild and myself.
With someone like me around, they could pull me in when someone was absent, instead of focusing on getting a new raider geared up that could be rotated in and play on a more consistent basis.
And I albeit unknowingly still tried to keep to a raider's goals without raiding! I can't imagine our raid guild is any different than any other, so during raids, guild chat is peppered with epics being linked as they drop. I would note what I needed to get close to those things in badges. There is also talk now and then about different resist gear, and epic gems needing to be crafted - all things that if you don't raid you shouldn't give a flying fig about. But in the back of my mind I was making lists that I needed to get those things as well.
The reason why I've had so much fun on my alt is in part to the fact I'm not in the guild, I don't see the chat. I don't see what I'm missing and I don't have any urgent need to quest faster, group more, farm a lot.
So I'm thinking I should have dropped my main out of the guild as soon as I "retired" from raiding. Just the way I first joined a raid guild to be with like-minded individuals, why would I remain there now that we no longer were? What has and is keeping me there at the moment are memories and my self-defined loyalty. But I don't want to try to keep up with something that is out of my reach. I want to go at my own pace and I think finding a guild where people embrace that would improve my game time.