If you enjoyed leveling so much and that was such a long term engaging gameplay loop, why did you quit instead of just rolling an alt, enjoying the loop again, and opting out of raiding?
The only way raiding becomes a second job is if there's no instancing and you're either on-call batphoning guildies for targets, or required to be online at set times because you don't know what spawn competition will be for targets of opportunity.
On Project Quarm I'm in a raiding guild with every target on farm status. There are guild locked instances of all raid targets. There are set raid nights 3 days a week, 3 hours each session. We field a force of about 62-75 folks every night, but the raid roster is 110ish members. Average attendance sits around 70%. It's fucking awesome. Come when you want, or don't. It doesn't matter and it's so so nice. There's at least 8 other guilds just like this.
S
Secrets
absolutely fucking nailed it.