Mid October I got a promotion at work which meant a more hectic schedule, and I also moved farther away which meant more of a drive. Both decreased my free time (what website?), and one in particular got too hard on me to raid competitively with my guild.
Raiding until 2 am four nights a week while having to sometimes get up at 6:30 am meant I would come home from work, take a nap to try and catch up, wake up tired and try to raid. It severely affected my performance. I don't always have to get up so early since my schedule varies a bit, but it seemed like I was always trying to play catch up.
It was during our Mythic Imperator progression I realized how much my lack of sleep was effecting me, and the whole guild. I had double the amount of deaths on that fight compared to everyone else, and was incredibly slow to make decisions in general. I tried to tough it out, but I eventually couldn't help but feel like I was holding our progression back. I quit shortly thereafter.
I miss raiding Mythic, I miss my guildies, BUT I LOVE SLEEPING. It's nice to not be so tired all of the time. I don't have the time or the schedule to raid in a Mythic guild, but I joined a coworkers guild who only raids two nights a week! It's heroics for now, and I've gone ret Paladin instead of holy, but it makes me happy enough. I've got a nice group of people to raid with and it's stress free!